Fig. 2From: The Duffy binding protein (PkDBPαII) of Plasmodium knowlesi from Peninsular Malaysia and Malaysian Borneo show different binding activity level to human erythrocytesBinding activity level of PkDBPαII to human and macaque erythrocytes. Number of rosettes formed by COS-7 cells transfected with PkDBPαII of Peninsular Malaysia and Malaysian Borneo. A positive rosette was defined as more than half the surface of the transfected cells covered with attached erythrocytes, and the total number of transfected COS-7 cells counted for each independent experiment was 1500 per experiment. Data are shown as the mean rosettes number of three independent experiments. The error bar represents ±standard deviation. Statistical difference between PkDBPαII of Peninsular Malaysia and Malaysian Borneo, and between human and macaque erythrocytes is indicated with double asterisk (P < 0.001)Back to article page