A randomly selected panel of 20 paired WB4 and WB20 duplicate amplification products were sequenced and coreceptor tropism was inferred by geno2pheno [coreceptor]. Results WB20 yielded a higher amount of DNA than WB4 (median [IQR] values 332.5?ng/l [117.5-401] and 107?ng/l [56.6-318], respectively; P? ?0.001). singlicate nested PCR followed by triplicate Continue Reading