“…Some other proteases like lysosomal and acrosin forms of β-galactosidase from acrosome and testes of ram and rabbit (Majundar and Lessin, 1975), 110 kDa collagenase with pH optimum of 7.5 from human and bull spermatozoa (Koren et al, 1973), Cathepsin-D proteases from mouse testes (Erickson et al, 1974), and sperm proteases like Dipeptidyl protease-II from guinea pig (Talbot et al, 1985), 80 kDa Calpain-II (Shollmayer,1986) and aryl sulphatases (Dudkiewicz, 1984) from boar, neuraminidases (Srivastava and Abu, 1977) and acid phosphatases from rabbit (Gonzales et al, 1973), non-specific esterase (Brugan et al, 1972) and aryl amidases (Meizel and Cotham, 1972) from bovine, aspartyl amidases from mammalian spermatozoa (Bhalla, 1973) have been reported. Presence of some major proteases was detected in cattle bull semen by Ferrer et al (2012).…”