The objective of this study was to determine the effect of age of the ovulatory follicle on fertility in beef heifers. Ovulation was synchronized with the 5 d CO-Synch + controlled intravaginal drug release (CIDR) program in heifers in Montana (MT; n = 162, Hereford and Angus Crossbred) and Ohio (OH; n = 170, Angus Crossbred). All heifers received estradiol benzoate (EB; 1 mg/500 kg BW, [i.m.])...

Dr. Pierre A. de Viragh, Service de dermatologie, Centre hospitaller universitaire, CH-1011 Lausanne (Switzerland) The case report of Komura and Tani [1] on a hair follicle nevus provides the opportunity to raise the question whether this hamar-toma is really an entity of its own. There are some indications that the hair follicle nevus could be a well-differentiated trichofollicu-loma cut at it...

The Arabian carpet shark, Chiloscyllium arabicum is endemic to the Gulf and northern Sea. aim of this work study reproduction maturity species. A total 87 males 139 females, including 19 egg-bearing individuals collected from bottom set longline fisheries in Saudi waters between October 2017 February 2019, were examined. size at 50% was estimated as 62.3 62.5 cm length (TL) for respectively. Ch...

The present short communication puts on record a case of ovarian teratoma in a water buffalo along with detailed description of its ovarian biometry, follicular fluid composition and functional assessment. The 2.0×2.3×2.9 cm teratoma was found in the right ovary of 2.4×2.6×4.2 cm size. The teratoma was firmly encapsulated with cartilaginous tissue and its cross section revealed tufts of hair ma...

BACKGROUND Progress in oncology could improve survival rate in children, but would probably lead to impaired fertility and puberty. In pre-pubertal girls, the only therapeutic option is the cryopreservation of one ovary. Three births have been reported after reimplantation of cryopreserved mature ovary. Conversely, reimplantation of ovary preserved before puberty (defined as immature ovary) has...

background: poor ovarian response phenomenon has been observed in some of the in vitro fertilization-embryo transfer patients. some investigations found that follicle stimulating hormone receptor (fshr) gene plays a role in the process, but no direct evidence shows the correlation between genotypes of fshr and ovarian response. objective: exploring the molecular mechanism behind the mutation of...

The generation of epithelial cell polarity is a key process during development. Although the induction and orientation of cell polarity by cell-cell and cell-extracellular matrix (ECM) interactions is well established, the molecular mechanisms by which signals from the ECM control cell polarity in developing epithelial tissues remain poorly understood. Here, we have used the follicular epitheli...

We studied the regulation of the yolk protein (YP) genes in the somatic cells of the gonads, using temperature sensitive mutations (tra-2ts) of transformer-2, a gene required for female sexual differentiation. XX;tra-2ts mutant animals were raised at the permissive temperature so that they developed as females and were then shifted to the restrictive male-determining temperature either 1-2 days...

Mucosal epithelial M cells provide an efficient portal of entry for microorganisms. Initially defined by their irregular microvilli and abundant transcytotic channels in the avian bursa of Fabricius, M cells also are found in the lymphoid follicle-associated epithelium of the mammalian appendix, Peyer's patches, and other mucosal surface-lymphoid interfaces. We describe here a previously unreco...