Cytochemical studies on oogenesis of penaeus vannamei 南美白对虾卵子发生的细胞化学研究
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The detection of ribosomal rna gene amplification during mouse oogenesis 基因扩增的测定
3.
In the oogenesis of the acrida chinensis , patency played a very important role in the process of fertilization 在外源性卵黄进入卵母细胞的过程中，滤泡开放现象起着重要作用。
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The follicle cells taked part in the synthesis of yolk precursor , and the yolk precursor were transported into oocyte by pinocytosis and fusion . after follicle cells secreting egg shells , oogenesis completed 在帮助卵母细胞沉积完卵黄后，滤泡细胞还分泌卵壳蛋白，形成卵壳之后退化消失
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S . oogenesis oogenesis can be devided into four stages : oogonia , provitellogenic oocytes , vitellogenic oocytes and mature egg . the chromatin in oogonia nucleus is in the shape of electron - densed granules 卵子发生卵子发生可分为卵原细胞、卵黄发生前的卵母细胞、卵黄发生的卵母细胞、成熟卵细胞四个阶段。
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Ultrastructural features of oogenesis of the acrida chinensis were observed under tem . genesis of yolk granule and transformation of cell organelle in the oocytes of the acrida chinensis were investigated 总地来说，卵黄物质是由卵母细胞、滤泡细胞及脂肪体共同生成的；在以后卵的孵化及胚胎发育中起重要作用
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Secondly , the trends of dna and rna in the oocytes and follicle cells were displayed by histochemical method during oogenesis , which indicated that rna were synthesized at stage of the vitellogenic oocytes . but the quantity of dna was n ' t change 并根据这八个阶段对卵子发生进行了组织化学的初步研究，结果表明，在卵子发生过程中，卵母细胞遗传物质dna的总量相对保持不变，保证了遗传信息的。
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Oogenesis was described briefly and the ways of the formation of yolk granules were explored . at first , eight stages in the oogenesis of the acrida chinensis were distinguished and described respectively , basing on the changes of the oocyte ' s size , chromosomal changes in the nucleus of the oocyte , vitellogenesis and the size of the follicle cells 在基础理论方面，本研究首先在光镜水平对中华蚱蜢卵子发生进行了阶段划分；并以此为依据，用组织化学方法对卵子发生中卵母细胞与滤泡细胞遗传物质的变化及作用，组成卵黄的生物大分子物质的生成及变化进行了初步研究。
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Studies on spermatogenesis and oogenesis in palaemon modestus jiang ye - qin ( chemistry department , huzhou teachers coliege , huzhou 313000 ) palaemon modestus belongs to genus palaemon , family palaemonidae , caridea , natantia , decapoda , class crustacean . lt is a kind of freshwater prawn across china and especially abounds in the taihu lake which is regarded as one of the " three delicacies " of the taiha lake . as for the researches on palaemon modestus , v / e can only refer to spermatogenesis of freshwater shrimp exopalaemon modestus ^ ruang hai - xia et al , 2001 ) , studies on reproductive biology of exopalaemon modestus l . the structure and development of the male reproductive system ( huang hai - xia et al , 1999 ) and studies on freshwater prawn in the taihu lake ( yan sheng - liang , 1999 ) . on the bases of their researches and with the help of tem , i have made further researches on sperm ultrastructure , spermatogenesis , oogenesis and mature oocyte ultrastructure in palaemon modestus 秀丽白虾palaemonmodestus属甲壳纲crustacea十足目decapoda游泳亚目natantia真虾部caridae长臂虾科palaemonidae长臂虾属palaemon ，是我国南北均产的淡水虾，其中太湖产量尤其大，与太湖银鱼、鲚鱼并称“太湖三宝” 。有关秀丽白虾的研究仅见秀丽白虾雄性生殖系统的研究(黄海霞等， 1999 ) 、秀丽白虾精子发生的研究(黄海霞等， 2001 ) 。本人在前人工作的基础上，利用透射电镜技术( tem )进一步研究了秀丽白虾精子的形态、结构及精子的发生过程，同时还研究了秀丽白虾卵的发育过程，从卵原细胞到卵黄发生前的卵母细胞、卵黄发生的卵母细胞及成熟卵细胞，各期卵细胞的形态结构特点及各部分结构的变化情况。
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However , kit protein doesn " t exist in oogenesis after birth . there are also c - myc positive protein granules in the spermatomeres from metaphase i to telophase ii , in the spermatozoa and in the secretory cells of the spermatheca . c - myc protein expresses not in the normal follicles , but in the follicular cells of the apoptotic ones Myc在处于减数分裂的中期至末期的精母细胞的细胞质或细胞核内呈阳性表达，在减数分裂后形成的精细胞和受精囊囊壁的上皮细胞的细胞质内也有阳性表达：但在出生后的卵子正常发生过程中无阳性表达，然而在凋亡卵泡的滤泡细胞的细胞质内有阳性表达。
