Tunic Cell Morphology and Classification in Botryllid Ascidians(Morphology)
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概要
- 論文の詳細を見る
The morphology of tunic cells was investigated in ten botryllid ascidians, six Botryllus and four Botrylloides species, by means of light and electron microscopy. Three types of tunic cells were described, I.e. amoeboid, vacuo-granular and large granule tunic cells. Amoeboid tunic cells were irregularly shaped, and had many pseudopodia. They were found in the all species studied here. Vacuo-granular tunic cell had many vacuoles which contained round granules, and was found in four Botryllus and four Botrylloides species. The diameters of the granules varied amond species (ca. 1.4-0.8 ^m). Large granule tunic cells were peculiar to Botryllus scalaris, and each of them contained a single large granule with lamellate substructure. Some tunic cells showed intermediate characteristics of amoeboid and vacuo-granular tunic cells. It seems that amoeboid tunic cells probably differentiate into vacuo-granular tunic cells in the tunic. There are thread-like bacteria in the tunic, and they often dangle around vacuo-granular tunic cells. There may be some interactions between tunic cells and the bacteria.
- 社団法人日本動物学会の論文
- 1991-10-15
著者
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Saito Yasunori
Shimoda Marine Research Center, University of Tsukuba
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Hirose E
Univ. The Ryukyus Okinawa Jpn
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Hirose Euichi
Shimoda Marine Research Center University Of Tsukuba : (present Address)department Of Biology Keio U
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Hirose Euichi
Biological Laboratory College Of Agriculture And Veterinary Medicine Nihon University
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Saito Y
Shimoda Marine Research Center University Of Tsukuba
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Saito Yasunori
Shimoda Marine Research Center University Of Tsukuba
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Watanabe H
Toyama Medical And Pharmaceutical Univ. Toyama Jpn
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WATANABE Hiroshi
Shimoda Marine Research Center,University of Tsukuba
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Saito Yasunori
Shimoda Marine Research Center Univ. Of Tsukuba
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