Results 191 to 200 of about 59,648 (240)
Some of the next articles are maybe not open access.
Immunosuppressive activity in the rat seminiferous tubules
Journal of Reproductive Immunology, 1992Rat seminiferous tubule segments in defined stages of the epithelial cycle were isolated by transillumination-assisted microdissection. The segments were cultured together with ConA-stimulated peripheral blood lymphocytes (PBL) and incorporation of 3H-labelled thymidine was measured.
P, Pöllänen +6 more
openaire +4 more sources
Three-dimensional structure of seminiferous tubules in the Syrian hamster
Journal of Anatomy, 2021 The hamster is useful for the study of male reproductive biology. However, unlike in the mouse and rat, the gross structure of seminiferous tubules in the hamster is largely unknown.
Hiroki Nakata +2 more
exaly +2 more sources
Androgen Metabolism in the Seminiferous Tubule
1975FSH, LH and androgens are involved in the hormonal control of spermatogenesis. While FSH acts directly on the seminiferous tubules, LH seems to exert its action by stimulating testosterone production by Leydig cells. This concept has been supported by the finding of specific binding of FSH in tubular cells (1) and of LH in the membranes of Leydig cells
M A, Rivarola +3 more
openaire +2 more sources
THE ROLE OF THE SEMINIFEROUS TUBULES IN THE PRODUCTION OF HORMONES
Annals of the New York Academy of Sciences, 1952Tables 2, 3, and 4 are reprinted from the Journal of Clinical Endocrinology. 11: 1403. Nov. 1951.
E P, McCULLAGH, C A, SCHAFFENBURG
openaire +2 more sources
The lamina propria of the bovine seminiferous tubule
Cell and Tissue Research, 1979The boundary tissue of bovine testicular seminiferous tubules exhibits remarkable regional differences at the level of the seminiferous tubule proper, as compared with its terminal segment. The basal lamina of the seminiferous tubule proper is multilayered and possesses knob-like protrusions.
K H, Wrobel, R, Mademann, F, Sinowatz
openaire +2 more sources
Contractile Cells in Human Seminiferous Tubules
Science, 1966Electron microscopic study of the peritubular connective tissue in human testis reveals the presence of "contractile-type" cells rather than of typical fibrocytes. Their cytoplasm has numerous fine filaments and other components characteristic of smooth muscle cells. The rough-surfaced endoplasmic reticulum, however, is relatively prominent.
M H, Ross, I R, Long
openaire +2 more sources
Seminiferous Tubule Dysgenesis
American Journal of Diseases of Children, 1961The following case of Klinefelter's syndrome (seminiferous tubule dysgenesis), confirmed by testicular biopsy and chromosome count, is of interest because of the youth of the patient. Report of Case The patient (Fig. 1) is a 10-month-old Puerto Rican boy who was admitted to the hospital because of recurrent episodes of pneumonia. The parents, both 23
openaire +1 more source
Histopathological diagnosis of hypercurved seminiferous tubules
Histopathology, 1980A simple method for the recognition of hypercurvature of the seminiferous tubules in otherwise normal biopsies from infertile males consists of the recognition of characteristic ‘figure 8’ profiles of sectioned seminiferous tubules. Nineteen cases of morphometrically verified hypercurvature and 24 controls were tested in order to determine the validity
openaire +2 more sources
Ultrasonic Evaluation of Seminiferous Tubules by Frequency Map
2012 Fifth International Conference on Emerging Trends in Engineering and Technology, 2012This paper describes a seminiferous tubules evaluation system using an ultrasonic probe. This system evaluates diameters of seminiferous tubules for azoospermia patients. We employ a 5.0MHz ultrasonic single probe. In the experiment, we employ large and small nylon lines as the healthy and unhealthy seminiferous tubules.
Yuya Takashima +4 more
openaire +2 more sources
Extracellular purines from cells of seminiferous tubules
Molecular and Cellular Biochemistry, 2003It has been long postulated that extracellular purines can modulate the function of the male reproductive system by interacting with different purinergic receptors of Sertoli and germinative cells. Many authors have described the biological changes induced by extracellular ATP and/or adenosine in these cells, and some hypothetical models for paracrine ...
Daniel Pens, Gelain +2 more
openaire +2 more sources