†first duplicate at ITM and INRB. ITM = Institute of Tropical Medicine; INRB = Institut National de Recherche Biomédicale; GE-buffer = guanidine hydrochloride EDTA buffer.
CV: coefficient of variance is expressed as the percentage of Ct standard deviation to the mean Ct. Stability decreases from top to bottom. Group 1: E18, P1 and P4; group 2: P1, P4 and P10; group 3: P