Results 161 to 170 of about 42,144 (197)
Some of the next articles are maybe not open access.
The Ultrastructure of the Seminiferous Tubule
1982During the short phase of sexual activity the germ cell development can be described light microscopically as a succession of defined stages. A detailed representation of the different cell types is only possible, however, in the area of ultrastructural examination.
openaire +1 more source
INHIBIN FROM CULTURES OF RAT SEMINIFEROUS TUBULES
Journal of Endocrinology, 1978SUMMARY Medium from cultures of mature rat seminiferous tubules contained a substance which suppressed, in a dose-related manner, the luteinizing hormone releasing hormone (LH-RH)-stimulated secretion of FSH by cultured rat pituitary cells.
L W, Eddie +4 more
openaire +2 more sources
Histologic Changes in the Seminiferous Tubules after Vasectomy
Fertility and Sterility, 19744 different studies on the effect of vasectomy on the testis in canines and humans are reported. Testicular biopsies were performed at certain intervals and the results in both humans and dogs were nearly identical. It was found that spermatogenesis 2 to 3 weeks after vasectomy remained unchanged with accumulation of spermatozoa in the tubules ...
F C, Derrick +7 more
openaire +2 more sources
Leydig cells within the aspermatogenic seminiferous tubules
Human Pathology, 1987Cells identical to Leydig cells were found within a peritubular boundary layer and even inside a basal lamina of seminiferous tubules in three male patients (two with inguinal cryptorchism and one with infertility). The seminiferous tubules of all patients showed a moderate to marked thickening of the boundary layer and a complete loss of spermatogenic
H, Mori +4 more
openaire +2 more sources
Hormonal Regulation of the Seminiferous Tubule Function
1975Until the second half of the third decade of the twentieth century, questions concerning the controlling mechanisms in the development of the testes and in the maintenance of their function were frequently asked, but poorly understood. Numerous clinical and pathological observations led to a vague idea that these mechanisms may be located within the ...
openaire +2 more sources
Oocytes in Seminiferous Tubules
Fertility and Sterility, 1958J T, BRADBURY, R G, BUNGE
openaire +2 more sources
Assessment of Spermatogenesis Through Staging of Seminiferous Tubules
2012Male germ cells in all mammals are arranged within the seminiferous epithelium of the testicular tubules in a set of well-defined cell associations called stages. The cellular associations found in these stages and characteristics of the cells used to identify the stages have been well described.
Marvin L, Meistrich, Rex A, Hess
openaire +2 more sources
Paracrine regulation of Leydig cells by the seminiferous tubules
International Journal of Andrology, 1983Testes of adult control and unilateral cryptorchid rats were fixed by vascular perfusion. The cell profile area of peritubular Leydig cells surrounding tubules in different stages of spermatogenesis, and the cell profile area of perivascular Leydig cells were determined.
openaire +2 more sources
Ultrastructure of the Seminiferous Tubules in Magnesium-Deficient Rats
Archives of Andrology, 1981The ultrastructure of the seminiferous tubule in the testis of magnesium-deficient rats is described. The boundary tissue was normal. Cells in the basal compartment were shrunken with large intercellular spaces except where desmosome-like junctions occurred.
openaire +2 more sources
Three-dimensional structure of seminiferous tubules in the Syrian hamster
Journal of Anatomy, 2021Hiroki Nakata +2 more
exaly