Fig. 6

Principal component analysis of adhesion dynamics of parasitized HbAA and HbAS erythrocytes. The score plot of the first two principal components (PC1 and PC2) is shown and the percentage of the total variance explained by each principal component is given in parenthesis. The combined principal components PC1 and PC2 explain 59.64% of the variance in the data. The plot is overlaid with the eigenvectors (gray arrows) whose length and direction indicate how influential a variable is. Each dot represents the data set obtained from a single cell