Sato Eimei | Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
スポンサーリンク
概要
- 佐藤 英明の詳細を見る
- 同名の論文著者
- Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku Universityの論文著者
関連著者
-
Sato Eimei
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
SATO Eimei
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
Sasada Hiroshi
Laboratory Of Animal Reproduction Department Of Animal Science Faculty Of Agriculture Tohoku Univers
-
SASADA Hiroshi
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
Sato Eimei
Tohoku Univ. Sendai Jpn
-
Sato E
Graduate School Of Agricultural Science Tohoku University
-
Sato Eimei
東京大学医科学研究所
-
Sato Eimei
Graduate School Of Agricultural Science Tohoku University
-
Sato E
Univ. Tokyo Tokyo Jpn
-
Yokoo Masaki
Laboratory Of Animal Reproduction Faculty Of Bioresource Sciences Akita Prefectural University
-
YOKOO Masaki
Laboratory of Animal Reproduction, Faculty of Bioresource Sciences, Akita Prefectural University
-
Yokoo M
Laboratory Of Animal Reproduction Faculty Of Bioresource Sciences Akita Prefectural University
-
Yokoo Masaki
Lab. Of Animal Reproduction Fac. Of Bioresource Sciences Akita Prefectural Univ.
-
Sasada Hiroshi
Lab. Of Animal Reproduction Graduate School Of Agricultural Sci. Tohoku Univ.
-
Sasada Hiroshi
Graduate School Of Agricultural Science Tohoku University
-
KIMURA Naoko
Laboratory of Animal Reproduction, Faculty of Agriculture, Yamagata University
-
Kimura Naoko
Laboratories Of Food Science And Nutrition Department Of Life Style Studies School Of Human Cultures
-
Kimura N
Graduate School Of Agriculture Tohoku University
-
Kimura N
Laboratory Of Animal Reproduction Faculty Of Agriculture Yamagata University
-
SHIMIZU Takashi
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
RODRIGUEZ-MARTINEZ Heriberto
Division of Reproduction, Faculty of Veterinary Medicine and Animal Science (FVMAS), Swedish Univers
-
KAWAHARA Manabu
Laboratory of Animal Resource Development, Faculty of Agriculture, Saga University
-
YAMANAKA Ken-ichi
National Agricultural Research Center for Kyushu Okinawa Region (KONARC)
-
SUGIMURA Satoshi
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
WAKAI Takuya
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
MATSUMOTO Hiromichi
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
Kawahara Manabu
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
Matsumoto Hiromichi
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
Rodriguez-martinez Heriberto
Division Of Comparative Reproduction Obstetrics And Udder Health Department Of Clinical Sciences Fac
-
Yamanaka Ken-ichi
National Agricultural Res. Center For Kyushu Okinawa Region
-
Yamanaka Ken-ichi
National Agricultural Research Center For Kyushu Okinawa Region
-
Wakai Takuya
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
KOHSAKA Tetsuya
Laboratory of Animal Reproduction, Faculty of Agriculture, Shizuoka University
-
佐々田 比呂志
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
佐々田 比呂志
宮城農業短期大学
-
Kohsaka Tetsuya
Laboratory Of Animal Reproduction Faculty Of Agriculture Shizuoka University
-
MIZUTANI Eiji
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
YOSHIDA Tomoyuki
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
YAMANAKA Ken-ichi
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
Shimizu T
Univ. Occupational And Environmental Health Jpn
-
JIANG Jin-Yi
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
Shimizu T
Institute Of Agriculture And Forestry University Of Tsukuba
-
Hoshino Yumi
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
Abe Yasuyuki
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
Mizutani Eiji
Laboratory For Genomic Reprogramming Riken Center For Developmental Biology
-
Yoshida Tomoyuki
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
Yamanaka Ken-ichi
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
高坂 哲也
Laboratory of Animal Reproduction, Faculty of Agriculture, Shizuoka University
-
佐藤 英明
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
BAMBA Kimio
Laboratory of Animal Reproduction, Faculty of Agriculture, Shizuoka University
-
高坂 哲也
宮城農業短期大学
-
Kobayashi Jin
Miyagi Prefecture Agricultural College
-
Miyoshi Kazuchika
Laboratory Of Animal Reproduction Faculty Of Agriculture Kagoshima University
-
Tsujii Hirotada
Faculty of Agriculture, University of Shinshu, Kamiina-gun, Nagano 399-45, Japan
-
Rodriguez-martinez Heriberto
Division Of Reproduction Faculty Of Veterinary Medicine And Animal Science (fvmas) Swedish Universit
-
Abe Hiroyuki
Division Of Cardiovascular Medicine Department Of Medicine Nihon University School Of Medicine
-
水谷 英二
東北大学大学院農学研究科動物生殖科学分野
-
江 金益
東北大学大学院農学研究科動物生殖科学分野
-
水野 里志
東北大学大学院農学研究科動物生殖科学分野
-
江 金益
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
Sato E
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
Miyazawa Teruo
Food & Biodynamic Chemistry Laboratory Graduate School Of Life Science And Agriculture Tohoku Un
-
新比惠 啓志
Safety Research Laboratory, Research Division, Mitsubishi Tanabe Pharma Corporation
-
SAEKI Kazumi
Laboratory of Animal Reproduction, Graduate Schcool of Agriculture Science, Tohoku University
-
TOMIOKA Ikuo
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
ABE Yasuyuki
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
HARA Kenshiro
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
Saeki K
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
Bergqvist Ann-Sofi
Division of Comparative Reproduction, Obstetrics and Udder Health, Faculty of Veterinary Medicine an
-
横尾 正樹
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
Bage Renee
Division of Comparative Reproduction, Obstetrics and Udder Health, Faculty of Veterinary Medicine an
-
水谷 英二
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
水野 里志
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
Nakagawa Kiyotaka
Food & Biodynamic Chemistry Laboratory Graduate School Of Life Science And Agriculture Tohoku Un
-
Saeki Kazumi
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
豊田 裕
Obihiro University of Agriculture and Veterinary Medicine
-
MIZUNO Satoshi
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
Hamano Koh-ichi
Faculty Of Agriculture Shinshu University
-
Shimizu T
Department Of Electrical And Electronic Engineering Kanazawa University
-
Tsujii Hirotada
Faculty Of Agriculture Shinshu University
-
Kawahara Manabu
佐賀大学 農学部動物資源開発学分野
-
IMAHIE Hiroshi
Safety Research Laboratory, Tanabe Seiyaku Co. Ltd.
-
TOYODA Yutaka
Obihiro University of Agriculture and Veterinary Medicine
-
Kobayashi J
Department Of Farm Business School Of Food Agricultural And Environmental Science Miyagi University
-
Shimizu Tatsuo
Faculty Of Technology
-
Uchida Takafumi
Laboratory Of Enzymology Department Of Molecular And Cell Biology Graduate School Of Agricultural Sc
-
TUNJUNG Woro
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
Aono Nobuya
Yoshida Lady's Clinic
-
Bage Renee
Division Of Comparative Reproduction Obstetrics And Udder Health Faculty Of Veterinary Medicine And
-
Toyoda Yutaka
Obihiro Univ. Agriculture And Veterinary Medicine
-
野中 薫雄
琉球大学医学部器官病態医科学講座皮膚科
-
HASHIZUME Kazuyoshi
Laboratory of Reproductive Endocrinology, National Institute Animal Industry
-
高原 英成
Laboratory of Biochemistry, Ibaraki University School of Agriculture
-
SHERWOOD O.
Department of Molecular and Integrative Physiology, University of Illinois
-
高原 英成
茨城大・農
-
高原 英成
茨城大学
-
高原 英成
近畿大学
-
佐藤 英明
宮城農業短期大学
-
MIYOSHI Kazuchika
Laboratory of Animal Reproduction, Faculty of Agriculture, Kagoshima University
-
福井 えみ子
東京農工大学大学院連合農学研究科
-
福井 えみ子
宇都宮大学
-
佐藤 英明
宇都宮大学 農学部・動物生産学講座・動物内分泌学研究室
-
若山 照彦
理化学研究所神戸研究所発生・再生科学総合研究センター
-
若山 照彦
理化学研究所発生・再生科学総合研究センターゲノム・リプログラミング研究チーム
-
若山 照彦
理化学研究所神戸研究所発生・再生科学総合研究センターゲノム・リプログラミング研究チーム
-
若山 照彦
理化学研究所 発生・再生科学総合研究センター
-
若山 照彦
神戸大学 大学院・自然科学研究科
-
若山 照彦
理化学研究所発生再生科学総合研究センター
-
Miyoshi Kazuchika
鹿児島大学 農学部家畜繁殖学
-
橋爪 一善
農林水産省畜産試験場
-
橋爪 一善
農業生物資源研究所 発生分化研究グループ 生殖再生研究チーム
-
濱野 光市
信州大学 農学部
-
濱野 光市
信州大学農学部附属農場
-
濱野 光市
信州大学附属農場
-
濱野 光市
日本農産工業
-
NAITO Kunihiko
Laboratory of Applied Genetics, Graduate School of Agricultural and Life Sciences, University of Tok
-
Wakayama Teruhiko
Center For Developmental Biology Riken Kobe
-
飯島 康仁
東北大学大学院農学研究科
-
清水 隆
帯広畜産大学大学院畜産衛生学専攻生殖科学研究室
-
清水 隆
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
飯島 康仁
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
濱野 光市
Faculty of Agriculture, Shinshu University
-
高橋 正浩
家畜改良事業団・家畜バイテクセンター
-
木村 直子
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
Fukui Emiko
東京農工大学 連合農学研究科
-
Fukui Emiko
Faculty Of Agriculture Utsunomiya University
-
Fukui Emiko
United Graduate School Of Agriculture Tokyo University Of Agriculture And Technology
-
Kohsaka Tetsuya
Animal Reproduc Tion School Of Agriculture Lbaraki University
-
WAKAYAMA Teruhiko
RIKEN Center for Developmental Biology
-
Tachi Chikashi
Laboratory of Applied Genetics, Department of Animal Resource Science, School of Agriculture and Lif
-
Asano Yuzo
Safety Research Laboratory Tanabe Seiyaku Co. Ltd.
-
高原 英成
茨城大学・農学部
-
井上 玄志
東北大学大学院農学研究科
-
高梨 藏人
麻布大学獣医学部動物応用科学科
-
野口 多絵
麻布大学獣医学部動物応用科学科
-
井上 玄志
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
高梨 藏人
Laboratory of Developmental and Reproductive Biotechnology, Department of Animal Resource Science, S
-
野口 多絵
Laboratory of Developmental and Reproductive Biotechnology, Department of Animal Resource Science, S
-
HAYASHI Mayu
Laboratory of Developmental and Reproductive Biotechnology, Department of Animal Resource Science, S
-
Sasada Hiroshi
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
SUGAWARA Atsushi
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
INAI Kentaro
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
SHOJI Takehisa
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
KOBAYASHI Jin
Department of Farm Business, School of Food, Agricultural and Environmental Science, Miyagi Universi
-
AONO Nobuya
Yoshida Lady's Clinic
-
BAKHTIYARI Mehrdad
Department of Anatomy, Medical Faculty, Shaheed Beheshty University of Medical Sciences
-
Takeya Tatsuo
Graduate School Of Biological Sciences Nara Institute Of Science And Technology
-
Naito Kunihiko
Laboratory Of Applied Genetics Graduate School Of Agriculture And Life Sciences University Of Tokyo
-
Naito Kunihiko
Laboratory Of Applied Genetics Graduate School Of Agricultural And Life Science University Of Tokyo
-
Yamagata Kazuo
Laboratory For Genomic Reprogramming Center For Developmental Biology
-
Takahara Hidenari
Laboratories of Biochemistry, lbaraki University
-
Hashizume Kazuyoshi
Laboratory Of Animal Reproduction Faculty Of Agriculture Tohoku University
-
SHINOZAWA Tadahiro
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
小林 仁
Miyagi Agricultural College
-
小黒 仁司
Miyagi Agricultural College
-
内田 宏
Miyagi Agricultural College
-
MATSUYAMA SHIGEMI
Department of Veterinary Physiology,Veterinary Medical Science,The University of Tokyo,
-
高橋 正浩
Animal Bio-Technology Center, Livestock Improvement Association of Japan, Inc.
-
Wakayama Teruhiko
Laboratory For Genomic Reprogramming Center For Developmental Biology
-
Wakayama Teruhiko
Laboratory For Genomic Reprogramming Riken Center For Developmental Biology
-
Wakayama Teruhiko
Laboratory For Genomic Reprogramming Center For Developmental Biology Riken
-
Wakayama Teruhiko
Laboratory For Genomic Reprogramming Center For Developmental Biology Riken Kobe Minatojima-minamima
-
Wakayama Teruhiko
Department Of Veterinary Anatomy Faculty Of Agriculture The University Of Tokyo
-
青野 展也
Yoshida Ladys Clinic
-
永沼 孝子
Laboratory of Functional Biomolecules, Graduate School of Life Sciences, Tohoku University
-
阿部 靖之
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
YOSHIDA Hiroaki
Yoshida Ladys Clinic
-
KONNO Yoshiaki
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
HOSHINO Yumi
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
浅野 裕三
Safety Research Laboratory, Tanabe Seiyaku Co. Ltd.
-
田中 沙知
Faculty of Agriculture, Shinshu University
-
川名 陽子
Faculty of Agriculture, Shinshu University
-
TAKAHASHI Tatsuo
Nagano Prefectural Animal Industry Experiment Station
-
MIYAWAKI Koh-hei
Nagano Prefectural Animal Industry Experiment Station
-
ARIMA Hiroshi
Faculty of Agriculture, Shinshu University
-
濱野 光市
静岡大学 農学部
-
Hamano K
Shinshu Univ. Nagano Jpn
-
TAKAHASHI Masahiro
Animal Bio-Technology Center, Livestock Improvement Association of Japan, Inc.
-
Aono N
Yoshida Lady's Clinic
-
Tomioka I
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
Inai Kentaro
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
Kobayashi Jin
Department Of Animal Reproduction Miyagi Agricultural College Research Farm
-
Hara K
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
Mizutani Eiji
Lab. For Genomic Reprogramming Riken Center For Developmental Biology
-
Konno Yoshiaki
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
Shoji Takehisa
Laboratory Of Animal Reproduction Graduate School Of Agricultural Science Tohoku University
-
Yogo Keiichiro
Graduate School Of Biological Sciences Nara Institute Of Science And Technology
-
WAKAI Takuya
Department of Veterinary and Animal Sciences, University of Massachusetts
-
Gomez Jose
Case Western Reserve University
-
OGURO Hitoshi
Miyagi Agricultural College
-
UCHIDA Hiroshi
Miyagi Agricultural College
-
TANAKA Sachi
Faculty of Agriculture, Shinshu University
-
KAWANA Yoko
Faculty of Agriculture, Shinshu University
-
Sasaki K
Hitachi Ltd. Tokyo Jpn
-
INOUE Fukashi
Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University
-
TAKANASHI Kurato
Laboratory of Developmental and Reproductive Biotechnology, Department of Animal Resource Science, S
-
NOGUCHI Tae
Laboratory of Developmental and Reproductive Biotechnology, Department of Animal Resource Science, S
-
Umezu Motoaki
Laboratory Of Animal Beproduction Faculty Of Agriculture Tohoku University
-
Umezu Motoaki
Laboratory Of Animal Endocrinology And Reproduction Faculty Of Agriculture Utsunomiya University
-
SASAKI Katsuhiko
Maebashi Institute of Animal Science, Livestock Improvement Association of Japan
著作論文
- ウシ妊娠期の大型黄体細胞における暗調顆粒の超微形態学的特性とリラキシン免疫局在
- ブタ精子におけるリラキシンの特異的結合部位の存在と運動特性に対する作用
- Induction of Oocyte Maturation by Hyaluronan-CD44 Interaction in Pigs
- 未成熟ブタの卵胞発育過程における肝細胞増殖因子(HGF)とアンギオポエチンおよびそれらの受容体のメッセンジャーRNA発現
- シバヤギ胎盤から樹立したクローン化培養細胞株CPF-1におけるテロメア長短縮の解析
- Molecular Basis of Oocyte Maturation in Culture in the Pig
- Establishment of an In Vitro Production System for Nuclear Transfer Embryos Reconstituted with Cultured Cells in Pigs
- Development of a Gene-Modified Pig by Means of a Somatic Cell Clone Technique
- Spindle Formation and Microtubule Organization During First Division in Reconstructed Rat Embryos Produced by Somatic Cell Nuclear Transfer
- Effect of Activation Treatments on Actin Filament Distribution and In Vitro Development of Miniature Pig Somatic Cell Nuclear Transfer Embryos
- Vitrification of Germinal Vesicle Stage Oocytes
- Follicular Microvasculature and Angiogenic Factors in the Ovaries of Domestic Animals
- SERIAL CULTURING TECHNIQUE FOR GERM CELL SERIES IN MICE
- ウシ卵管上皮におけるヒアルロン酸受容体CD44の同定
- 最適なラット卵子の活性化方法の確立
- 胚由来細胞および卵丘細胞を用いたラットにおける核移植
- マウス単為発生卵に及ぼすサイトカラシンBの影響
- 段階的平衡化を伴った超急速ガラス化法によるマウス卵核胞期卵母細胞の凍結保存
- 卵成熟過程にある卵丘-卵母細胞複合体におけるCD44の発現
- プロジェステロン誘導マウス単為発生胚の着床前および着床後の発生ならびに二倍体胚との集合キメラによる新生仔の誕生
- 凍結融解・洗浄精子の頚管粘液添加培地内移動能による雄ウシの受胎性評価
- Difference in Sensitivity to Culture Condition Between In Vitro Fertilized and Somatic Cell Nuclear Transfer Embryos in Pigs
- Acetylation Level of Histone H3 in Early Embryonic Stages Affects Subsequent Development of Miniature Pig Somatic Cell Nuclear Transfer Embryos
- Role of the Hyaluronan Receptor CD44 during Porcine Oocyte Maturation
- Role of the Hyaluronan Receptor CD44 During Porcine Oocyte Maturation
- Detection of the Hyaluronan Receptor CD44 in the Bovine Oviductal Epithelium
- Assessment of Bovine X- and Y-bearing Spermatozoa in Fractions by Discontinuous Percoll Gradients with Rapid Fluorescence In Situ Hybridization
- Uterine angiogenesis during implantation and decidualization in mice
- Effect of Maitotoxin on the Acrosome Reaction in Bull Spermatozoa
- Early metaphase II oocytes treated with dibutyryl cyclic adenosine monophosphate provide suitable recipient cytoplasm for the production of miniature pig somatic cell nuclear transfer embryos
- Parathyroid Hormone (1-34) Improves Bone Mineral Density and Glucose Metabolism in Spontaneously Diabetic Torii-Leprfa Rats
- Acceleration of Follicular Development by Administration of Vascular Endothelial Growth Factor in Cycling Female Rats
- 「クローン羊」誕生によって生まれた動物バイオテクノロジー研究の新しいフロンティア
- A New Cell Death Inhibitor, Bax-inhibiting-peptide (BIP) Derived from Ku70(Animal Biology, Animal Reproduction)
- D-4. Development of a new cell death inhibitor : Bax Inhibiting Peptides (BIPs) derived from Ku70(Abstracts of the International Symposium on Recent Advances in Animal Science(IS-RAAS),Joint meeting of 2^ IS-AS and 3^ IS-IFS)
- 成熟後に精巣重量の増加と不妊を伴う先天性甲状腺機能低下症rdwラットの発達期のホルモン相について
- Effect of Fluorescent Mercury Light Irradiation on In Vitro and In Vivo Development of Mouse Oocytes after Parthenogenetic Activation or Sperm Microinjection
- Physiological function of hyaluronan in mammalian oocyte maturation
- Diabetic Peripheral Neuropathy in Spontaneously Diabetic Torii-Leprfa (SDT Fatty) Rats
- Efficient Establishment of Pig Embryonic Fibroblast Cell Lines with Conditional Expression of the Simian Vacuolating Virus 40 Large T Fragment
- Differential Expression of the Motin Family in the Peri-implantation Mouse Uterus and Their Hormonal Regulation
- PKA Implicated in the Phosphorylation of Cx43 Induced by Stimulation with FSH in Rat Granulosa Cells
- Efficient Establishment of Pig Embryonic Fibroblast Cell Lines with Conditional Expression of the Simian Vacuolating Virus 40 Large T Fragment
- Differential Expression of the Motin Family in the Peri-implantation Mouse Uterus and Their Hormonal Regulation