نتایج جستجو برای: epithelial oviductal cells
تعداد نتایج: 1432000 فیلتر نتایج به سال:
The epithelium of the human fallopian tube (oviduct) and cervix were studied by histological, immunohistological, and ultrastructural methods with a view to establishing the nature of the so called "basal" and "reserve" cells. The results indicated that the "basal" cells of the oviductal epithelia were T lymphocytes, with a predominance of T cytotoxic and suppressor cells. A more heterogeneous ...
This study was conducted to determine the effect of rabbit oocytes collected from ovaries or oviducts on the developmental potential of nuclear transplant embryos. Donor nuclei were obtained from adult skin fibroblasts, cumulus cells, and embryonic blastomeres. Rabbit oocytes were flushed from the oviducts (oviductal oocytes) or aspirated from the ovaries (follicular oocytes) of superovulated d...
Mammalian spermatozoa are not able to fertilize an egg immediately upon ejaculation. They acquire this ability during their transit through the female genital tract in a process known as capacitation. The mammalian oviduct acts as a functional sperm reservoir providing a suitable environment that allows the maintenance of sperm fertilization competence until ovulation occurs. After ovulation, s...
The objective of this study was to evaluate the effects of porcine oviductal epithelial cell (POEC) monolayers and cumulus cells on the zona pellucida (ZP) and cortical granules (CG) of in vitro matured porcine oocytes. Denuded and cumulus-enclosed oocytes were exposed to POEC before or during in vitro fertilization (IVF). The functional effects of the co-culture system were the tested on the Z...
When spermatozoa from two or more boars are mixed and females inseminated, the resulting litters are often skewed in favour of one male but there is currently no satisfactory physiological explanation for this effect. However, to reach the oocytes, the spermatozoa must enter the oviduct where they are exposed to factors that modulate their activity. They either become sequestered within the ovi...
چکیده مقدمه: ماده خارج سلولی به عنوان بخش مهم ریز محیطMicroenvironment)(، نقش اساسی در نگهداری وضعیت تمایز دارد. در بررسیهای گذشته، این اثر در برخی سلولها از جمله سلولهای پوششی لوله رحم و یا رحم مطالعه شده است. در این پژوهشها، برای حفظ تمایز سلول ، علاوه بر ماده خارج سلولی عوامل دیگری مانند هورمونها، فاکتورهای رشد و سلولهای داربستی نیز بکار رفته است ولی فر...
Follicle and oocyte growth is under the control of systemic gonadotropins and various local intraovarian factors. The present study was undertaken to examine the efficacy of peptide(s) isolated from ovine follicular fluid on preantral and antral follicles, oocytes, cumulus and granulosa cells, and oviductal epithelial cell growth in vitro in a heterologous species (Bubalus bubalis). Follicular ...
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