How To Use Spermatid In A Sentence
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The association of AQP11 with the residual cytoplasm of elongated spermatids and the distal tail of spermatozoa supports the hypothesis of more than just a role in conferring water permeability and also in the turnover and recycling of surplus cellular components made redundant during spermiogenesis and spermiation.
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For introduction of spermatid mitochondria, in vitro fertilization was carried out by microinjection of spermatids into unfertilized oocytes as described previously.
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The hypothesis was confirmed in experiments using phase-contrast microscopy, which showed the presence of individualized spermatids in the mutant testes.
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Spermatocytes, the progenitors of spermatids, are biosynthetically active cells, producing all the components that will be needed in the mature spermatozoa.
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Many of these immotile spermatids are dislodged from the spermatheca and swept away as oocytes parade through the reproductive tract.
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We discussed spermatogenesis -- how we got from a diploid spermatogonial stem cell to a haploid spermatid -- and then spermiogenesis -- the process by which the spermatids acquire the features of spermatozoa: tails, acrosomes and the like.
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These haploid cells - now called spermatids - thus contain 23 single half chromosomes.
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Three trained observers reviewed each stallion's histology slides by quantifying the number of spermatids within 25 cross-sectioned round seminiferous tubules.
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The symbols used are: spermatogonium (white pentagon); primary spermatocytes (white stars); round spermatids (white asterisk); elongated spermatids with high polarization, indicating the residual body or axonemal region (black asterisk) and the heads (white arrowheads).
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However, it is clear that only a small fraction of the spermatids develop into mature spermatozoa in males.
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Rates of protein evolution were fastest for genes expressed during the dramatic morphogenesis of round spermatids into spermatozoa.
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The FB-MOs, mitochondria, and haploid nuclei all segregate into budding spermatids and eventually occupy most of the cytoplasmic space.
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By contrast, mutant hermaphrodites are self-sterile when unmated due to a failure in spermatid activation.
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Development of the spermatid flagellum begins immediately after meiosis.
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Seminiferous tubules showed disruption of the normal spermatogenic cycle with abnormal acrosomal development on round spermatids, clumping of acrosomes, misaligned spermatids and the absence of normal elongated spermatids in Ehd1 -/- males.
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Within minutes, membranous organelles fuse with the spermatid plasma membrane, a polar pseudopod extends, and the major sperm protein polymerizes and organizes into a pseudopodial cytoskeleton.
