The cysteine proteases of metacercariae are involved in metacercarial excystment host immune modulation and possibly in tissue penetration. the secretory function of metacercarial cysteine proteases in addition to its role as a route for eliminating waste products. also exert pivotal roles in metacercarial excystment (Chung et al. 1995 host IgG degradation (Chung et al. 1997… Continue reading The cysteine proteases of metacercariae are involved in metacercarial excystment host