IMG_0003_NEW_0016

IMG_0003_NEW_0016 - r PP^cl& cr...

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Unformatted text preview: r PP^cl&amp; cr {&quot;Yt ut b[ p*yrp*^s The 'acrosomal reaction' also exposes proteins on the sperm surface the enable binding to the egg membrane' ln humans the CD9 protein on the egg might be the receptor for sperm binding' After fusion of sperm and egg membrane the sperm nucleus enters the egg' How to prevent PolYspermy ln sea urchins sperm-egg fusion triggers a transient----:-=::=&gt; '-depo-iaiisaiion of the egg plasma membrane, which acts as a fast block for polyspermy before the fertilization membrane forms' p[ocr,ry ,S Pdes) tr$n++ irr nt'tftrptt P',],1;rlidrt; 11...
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