Morphometric and ultrastructural characterization of Bos indicus preantral follicles
نویسندگان
چکیده
منابع مشابه
Structural and ultrastructural characterization of zebu (Bos indicus) spermatozoa.
The ultrastructure of normal, ejaculated spermatozoa of Bos indicus was studied by means of electron microscopy, being evaluated in two principal parts, the head and the tail. The head is flat, oval or paddle-shaped with a square base, which provides a concave recess for the insertion of the tail. The acrosome tightly covers the anterior two thirds of the nucleus. A distinct unilateral acrosoma...
متن کاملEffects of lowered temperatures and media on short-term preservation of zebu (Bos indicus) preantral ovarian follicles.
The maintenance of follicle quality during the transportation of ovaries is essential for the successful cryopreservation and in vitro development of preantral follicles. The objective of this study was to evaluate the effect of cooling ovarian tissue on the conservation of zebu cow preantral follicles. Ovarian pieces were immersed in saline or coconut water (CW) solutions and maintained at 4 o...
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The yolk sac is an embryonic membrane that is essential for the embryo's initial survival in many mammals. It also plays an important role in the production of proteins necessary for development. We studied proteins of the yolk sac in bovine embryos at up to 40 days of gestation. We examined the yolk sac of 17 bovine embryos at different gestational periods, measuring α-fetoprotein, α-1-an...
متن کاملSingle nucleotide polymorphism identification and characterization of GnRHR gene in Bos taurus and Bos indicus cattle
* Correspondence: [email protected]
متن کاملUltrastructural study of isolated mouse preantral follicles co-cultured with cumulus cells with leukemia inhibitory factor
Background: The ultrastructural analysis of cultured follicles could direct us to understand subcellular changes during in vitro culture. Objective: This study was done to verify the ultrastructural characteristics of in vitro cultured mouse isolated preantral follicles in co-culture system in the presence and absence of leukemia inhibitory factor (LIF) Materials and Methods: Mechanically isola...
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ژورنال
عنوان ژورنال: Animal Reproduction Science
سال: 2005
ISSN: 0378-4320
DOI: 10.1016/j.anireprosci.2004.09.003