Sentences with word «seminiferous»

Males from extinct lines had high variability in reproductive organ size, low sperm counts, low sperm motility, and a high rate of vacuolization of seminiferous tubules.

Focal dysplasia of pancreatic acinar tissue and marked hypoplasia of seminiferous tubules, depletion of adrenal lipid, and focal atrophy of the skin have been reported.

After 20 years developing their method, they say they can turn the progenitor cells that are inside seminiferous tubules, called spermatogonia, into mature sperm.

Philippe Durand and Marie - Hélène Perrard at the biotechnology company Kallistem in Lyon, France, say that their method coaxes seminiferous tubules — tissue that produces sperm in the testes — taken from humans, rats or monkeys into producing mature sperm cells.

The method involves suspending bundles of extracted seminiferous tubules in small cylinders of a water gel called chitosan.

But, on the third or fourth mouse, they found testes with thick, dark seminiferous tubules, stuffed with sperm.

Stage synchronization in rat seminiferous tubules using vitamin A depletion.

Regeneration of seminiferous tubules has been reported eight weeks after treatment with 5 % concentrations of CaCl2, but not at higher dosages [5].

Testis size, seminiferous tubule diameter, histological appearance, sperm number and motility, and fertility of the drug - treated males recover to normal levels.

In healthy mice, normal sperm line up at the center of a part of the testes known as the seminiferous tubule, ready for release (left, arrows).

The other kind is peritubular — that is, located on the surface of the seminiferous tubules that house sperm cell precursors.

m), where we can see the seminiferous tubules (red) surrounded by macrophages (green).

Once implanted into the seminiferous tubules of mice (where the animals» sperm production takes place), they differentiated into what the scientists termed «germ - cell - like cells,» simply by virtue of the environment in which they were placed.

Confocal images of sections of the seminiferous tubules illustrated the existence of various iPS cell - derived EGFP - positive cells, including flattened fibroblast cell - like myoid at the outermost layer of the tubules, spermatogonial stem cells with spherical nuclei closest to the basement membrane and spermatocytes with distinctive chromatin closer to the lumen than spermatogonial stem cells (Figure 6D).

However, if we focus on a single cycle of spermatogenesis within a segment of a mouse seminiferous tubule and compare it with a fly testis tubule, we see similar spermatogenic cell types present inside the fly testis tubule and the mouse seminiferous tubule segment [69].

Using conditional genetic ablation of Ar in Sertoli cells, we have shown that AR signaling is required for three stages of spermatogenesis: progression through meiosis I, the differentiation of haploid round spermatids into elongating spermatids, and spermiogenesis, the release of fully differentiated elongated spermatids into the lumen of the seminiferous epithelium.

Zeuterin works by halting sperm production at all levels and causing collapse of the seminiferous tubules to block sperm exit into the epididymis.