Cytostatic Effect of the Cytoplasm of Mature Oocytes in the Newt, Cynops pyrrhogaster : Developmental Biology
スポンサーリンク
概要
- 論文の詳細を見る
In anura, it has been known that the cytoplasm of mature oocytes possesses a specific factor to arrest nuclear division at metaphase. In the present study, we examined a similar effect of the cytoplasm in oocytes of a urodele, Cynops pyrrhogaster. Eggs during the first cleavage were injected various amounts of the oocyte cytoplasm (50-200nl) into the animal region of one of the two prospective blastomeres. The cytoplasm injection had no effect on the process of the first cleavage, but gave great influence for the subsequent divisions. In many cases, the second division of the cytoplasm-injected blastomeres was considerably delayed or completely arrested. Cytological examination revealed that chromosomes, spindle fibers or astral rays were frequently present in the uncleaved blastomeres. These results strongly suggested that the mature oocyte of the newt also contained a cytoplasmic factor which could arrest the nuclear division at metaphase.
- 社団法人日本動物学会の論文
- 1989-08-15
著者
-
Higuchi Keiko
Department Of Biology Faculty Of General Education Yamagata University
-
SAWAI TSUYOSHI
Department of Biology, Faculty of General Education, Yamagata University
-
Sawai T
Yamagata Univ. Yamagata
-
Sawai Tsuyoshi
Department Of Biology Faculty Of General Education Yamagata University
関連論文
- Comparison of Primary Thyroid Lymphoma with Anaplastic Thyroid Carcinoma on Computed Tomographic Imaging
- Comparison of Chemoradiotherapy with Radiotherapy Alone in Patients with Esophageal Adenocarcinoma
- Cytostatic Effect of the Cytoplasm of Mature Oocytes in the Newt, Cynops pyrrhogaster : Developmental Biology
- A Case Report of Long-term Survival after Radiotherapy for a Solitary Brain Metastasis from Breast Cancer
- Movement of the Cell Surface in the FirstCleavage Stage in the Newt Egg
- Surface Movement in the First Cleavage Stage of Newt Eggs(Developmental Biology)
- The Effect of Colchicine on Progress of Cleavage Furrow inAmphibian Eggs
- Effect of protein phosphatase inhibitors on cleavage furrow formation in newt eggs: Inhibition of normal furrow formation and concomitant induction of furrow like dents
- Furrow-inducing Activity of Extra Sperm NucleiPresent in Egg Fragment without Zygote Nucleus in Newt Eggs
- Microinjected Ca2+ Stores with Inositol 1,4,5-Trisphosphate Recepror to Dividing Newt Eggs Moves Toward the Presumptive Cleavage Furrow Together with F-Actin in a Microtubule- and ATP-Dependent Manner(Cell Biology and Morphology)Proceedings of the Seventy
- Evidences for Direct Involvement of Microtubules in Cleavage Furrow Formation in Newt Eggs
- Microscopic Observation of Surface Relaxation and Contraction Waves in Elongated Eggs of the Newt during Cleavage(Developmental Biology)