... director indirect, of MA on globin hydrolysis was tested by incubating synchronized ring-stage parasites with MAor leupeptin, a cysteine protease inhibitor, and visuali-zation of the globin band by ... accumulation of globin in MA-treated cultures (Fig. 1), indicating that the ini-tial hydrolysis of haemoglobin is not inhibited by MA. In addition, the morphology of infected erythrocytesincubated in ... surface protein remains on the parasite dur-ing red-cell invasion and is the target of invasion-inhib-iting antibodies. J Exp Med 172, 379–382.44 Hackett F, Sajid M, Withers-Martinez C, Grainger...