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Fig. 5 | Malaria Journal

Fig. 5

From: 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 strain

Fig. 5

Application of invasion inhibition assay. a Comparison of invasion inhibition efficiency of gradient concentration of antibodies by using flow cytometry and microscopy. S SYBR Green I flow cytometry, M microscopy, αNI non-immunized IgG. b Agreement of parasitaemia determination by flow cytometry and microscopy. SD standard deviation. c Invasion-inhibition activity of antibody combination. Gradient concentration IgG of PkDBPα and PkAMA1 to make final concentration 0.5; 1.0; 1.5 and 2.0 mg/mL were added. Double asterisks, p < 0.001

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