LMLN and infection: The case for characterization of invadolysins during initial infection of a human host is bolstered by the observation that the second most prominent invadolysin in S. mansoni germ balls (Smp_090100.1) has also been identified as the second most abundant protein released from S. mansoni acetabular glands during transformation into schistosomula, comprising roughly 12.8% of the normalized volume of the acetabular glands [23,31].