while these findings indicate that the failure of s. douthitti to produce chronic schistosomiasis in humans is not due to its lacking , or having a less potent 'penetration proteinase ' than s. mansoni , the proteolytic enzymes are sufficiently different to support the hypothesis that the schistosomatium line diverged quite early from the main branch of schistosoma evolution .
C0030946
proteinase
C0030940
proteolytic enzymes