the latter was found associated with 1 ) the fused membranes of the acrosomal cap remaining on the zona pellucida surface , 2 ) the material released on the zona surface after the acrosome reaction and possibly detectable after tannic acid fixation , 3 ) the equatorial segment of the sperm head and the preequatorial swellings , and 4 ) other sperm components , eg , the sperm tail .
C0037844
the
C0037868
sperm