incubation in vitro of viable leishmania enriettii with antibodies from infected or immune guinea pigs and a fluorescein-labeled antiguinea pig ig conjugate induced aggregation of surface antigens to form a `` '' cap '' '' over the anterior pole of the amastigote and over both the anterior and posterior poles of the promastigote form of the parasite .
C0003241
antibodies
C0034789
ig