Fig. 2From: Synergistic anti-malarial action of cryptolepine and artemisininsDose-response curves from the fixed-dose combinations of cryptolepine and artesunate. Ring-stage parasites were treated with fixed-dose combinations of cryptolepine and artesunate at 48 h after which analysis was done using the SYBR Green I fluorescent method. Each value represents the IC50 calculated from at least three independent in vitro experimentsBack to article page