Fig. 4From: Technical validation of an RT-qPCR in vitro diagnostic test system for the determination of breast cancer molecular subtypes by quantification of ERBB2, ESR1, PGR and MKI67 mRNA levels from formalin-fixed paraffin-embedded breast tumor specimensCorrelation between single measurements and mean values over all measurements of 8 samples on 4 different LightCycler instruments (total of 24 measurements per sample)Back to article page