Spermatozoa.progressive^4H post ejaculation:PrThr:Pt:Semen:Ord
spermatozoa.progressive^4h post ejaculation:prthr:pt:semen:ord
Spermatozoa Progressive [Presence] in Semen --4 hours post ejaculation
spermatozoa progressive [presence] in semen --4 hours post ejaculation