How To Use Acrosome In A Sentence
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Dominguez I, Fornes MW, Burgos MH, Mayorga LS (1996) Acrosome content release in streptolysin O permeabilized mouse spermatozoa.
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The acrosome is the packet of enzymes in the sperm’s head that produces enzymes to facilitate penetration of the egg.
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As researchers from the University of Illinois explain it, normal sperm are composed of a cap-like structure that surrounds the anterior end of the sperm head called the acrosome.
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When stimulated with progesterone or A23187 (a calcium ionophore), sperm from these animals had a defective acrosome reaction.
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They found that cathine and norephedrine significantly stimulated capacitation in mouse sperm, while preventing the acrosome reaction.
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The acrosome reaction is the chemical change that enables a sperm to penetrate an egg.
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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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A. agrarius mice express novel CD46 transcripts, resulting in the trade of spermatozoal CD46 protein expression for a rapid acrosome reaction rate, in common with other species of field mice.
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In rodents, the cell surface complement regulatory protein CD46 is expressed solely on the spermatozoal acrosome membrane.
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In order to accomplish this the head of each sperm called the acrosome contains a packet of shell-dissolving enzymes—released when contact with the egg is made.
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The acrosome is a large membrane-limited granule that overlies the nucleus of mature sperm
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So if the majority of sperm undergo the acrosome reaction on exposure to Viagra, the drug may significantly impair their fertilizing potential.
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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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Dr Lewis said the acrosome reaction involved the channelling of charged calcium atoms, or ions.
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If sperm undergo the acrosome reaction too early, before they contact the egg, they are incapable of fertilization.
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However, the amount of Viagra at concentrations equivalent to what a man would have thirty minutes after taking the maximum recommended 100 milligram dose leads to early activation of the acrosome reaction.
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