these changes in lectin-agglutinating properties are consistent with the fact that log-phase promastigotes represent a homogeneous population of noninfective parasites , whereas up to 50 % of the stationary-phase organisms appear to be transformed into infective-stage promastigotes , as determined by their ability to survive within normal resident mouse peritoneal macrophages in vitro .
C0030498
parasites
C0029235
organisms