Cells with pyknotic nuclei were observed next to the basement membrane and also spermatids
and spermatozoa were not observed in the tubules (Figure 2A).
TC = Town Creek, LC = Limestone Creek, TDS = Total Dissolved Solids in ppm, MR = ripening mature ovary, RE = ripe ovary, IV = stage IV testicular development with spermatids
, V = stage V testicular development with abundant sperm Date Site [H.
ferrugineus, the nuclei of early spermatids
were observed to be displaced to the cell periphery, while the nebenkern concentrated at the opposite pole to form 2 clusters.
Highly acetylated H4 is associated with histone displacement in rat spermatids
are recognizable not only by their smaller size but also by their dark, condensed chromatin and juxtaluminal position within the tubule.
Sertoli cells observed in some of the tubules were vacuolated preformed spermatids
Comparing these same groups, significant differences could be found in the number of round spermatids
and in the total number of germ cells, with increases of 21.
Since the distal centriole gave rise to the sperm axoneme during spermiogenesis, it is logical to suppose that the proximal centriole that is inherited by the embryo could cause aberrant mitosis as both are derived from the same mother centriole in spermatids
Increase in percentage of abnormal seminiferous tubules along with the decline in number of spermatogonia, primary spermatocytes, secondary spermatocytes and spermatids
probably correspond to the decrease in testosterone production or inhibition of pituitary gonadotropin secretion, which resulted in disruption of spermatogenesis (Raji and Bolarinwa, 1997).
In late-stage spermatids
the nucleus is the most prominent component.
and spermatozoids vary greatly in their state of
Advanced germ cells including spermatids
and Sertoli cells in some tubules were immunoreactive against anti-galectin-3.