Shape change in the parasites corresponding to the representative time series for each cluster. The snapshots depict parasites at the first frame and at every 45th frame thereafter. As can be seen, based on the rate of shape change, the parasites in (a) and (c) are more active than those in (b) and (d).
Lee et al. BMC Genomics 2012 13(Suppl 1):S4 doi:10.1186/1471-2164-13-S1-S4