The quaternary structural relationships between subunits of the follitropin (FSH) receptor were determined through the use of the reversible, homobifunctional, chemical cross-linking reagent bis[2-(succinimidooxycarbonyloxy)ethyl]sulfone (BSOCOES) after formation of covalent 125I-azidobenzoyl-FSH-receptor subunit complexes by photoaffinity labeling. This experimental approach resulted in the fo...

The blood-testis barrier (BTB) is found between adjacent Sertoli cells in the testis where it creates a unique microenvironment for the development and maturation of meiotic and postmeiotic germ cells in seminiferous tubes. It is a compound proteinous structure, composed of several types of cell junctions including tight junctions (TJs), adhesion junctions and gap junctions (GJs). Some of the j...

The differentiation of cat spermatids was studied in thin sections examined with the electron microscope. The Golgi complex of the spermatid consists of a central aggregation of minute vacuoles, partially surrounded by a lamellar arrangement of flattened vesicles. In the formation of the acrosome, one or more moderately dense homogeneous granules arise within vacuoles of the Golgi complex. The ...

Background: During the first meiotic prophase, alignment and synapsis of the homologous chromosomes are mediated by the synaptonemal complex. Incorrect assembly of the synaptonemal complex leads to impaired recombination and cell death, which in humans, causes infertility in males. Testis-expressed gene 12 (TEX12) is a germ cell-specific gene that is located on the chromosome 11 (11q22) in huma...

Samenvatting In dit case report beschrijven wij een 36-jarige man, die zich op de Spoedeisende Hulp presenteerde met pijn in rechterflank en rechter testis, bleek te berusten segmenteel infarct van testis. Een testisinfarct is zeldzame oorzaak acute scrotale echografisch lastig onderscheiden testistumor. De vaak idiopathisch. Predisponerende factoren zijn onder andere infectie, trauma hematolog...

Background: Vasectomy is a simple and highly effective contraceptive method with a low morbidity rate and an extremely low mortality rate. during the past decade millions of men have undergone vasectomy, but there have been surprisingly few studies of morphological effects of genital organs after vasectomy. The most important issues about vasectomy are degenerative changes in testicular tissue,...

Changes of chromosomal basic proteins of rats have been followed during transformation of spermatids into spermatozoa in the testis and during maturation of spermatozoa in the epididymis. Rat testis chromatin has been fractionated on the basis of differing sensitivity to shearing, yielding a soluble fraction and a condensed fraction. The sperm histone is found in the condensed fraction. Somatic...

BACKGROUND Several recent reports have demonstrated that the preoperative sensitivity and accuracy of identifying and locating non-palpable testes increases with the use of conventional MRI, in addition to diffusion-weighted imaging (DWI). Therefore, pre-operative prediction of the presence and location of testes using imaging techniques may guide management of intra-abdominal testis. Fowler-St...

in order to study the anatomy and histology of the testis and epididymis of caspian miniature horse, five adult stallions were used. routine anatomical and histological methods were used. anatomical study indicated that there were no differences between the testis and epididymis of the caspian miniature horse with the ordinary horse, except with the smaller sizes. the epididymis is attached to ...