Fig. 4From: In vitro invasion inhibition assay using antibodies against Plasmodium knowlesi Duffy binding protein alpha and apical membrane antigen protein 1 in human erythrocyte-adapted P. knowlesi A1-H.1 strainInvasion ability in 96-well plate. a, c Giemsa staining of P. knowlesi before (0 h) and after the invasion (10 h). b, d Histogram flow cytometry of before (0 h) and post-invasion (10 h). White head arrow, schizonts; black head arrows, newly ringsBack to article page