Figure 1From: Physical and chemical stability of expired fixed dose combination artemether-lumefantrine in uncontrolled tropical conditionsRaman spectrum of passed and failed Coartem/Riamet and reference. Plot of passed (p-value 0.388) and failed (p-value 0.004) Coartem/Riamet sample spectrum and reference spectrum, illustrated as counts (absolute measure of Raman intensity) versus Raman shift. The steep slope of the failed Coartem/Riamet sample is due to increased fluorescence of degradation products.Back to article page