Table 5. Pearson correlation matrix visualizing reference genes ranked by five different stability tests (BestKeeper, NormFinder, geNorm Excel, geNorm SAS, and ΔCt method.

p-value are described are in parenthesis. Significative values are indicated in bold.

	GAPDH	ACTB	MRPS27	MRPS30	EEF1	HMBS	TRFC	RPL5	LDHA	UBC	B2M	ACTA1	HPRT1
GAPDH	1
ACTB	-0.04242 (0.7653)	1
MRPS27	-0.07199 (0.6120)	0.76757 (<.0001)	1
MRPS30	-0.11391 (0.4214)	0.67690 (<.0001)	0.75617 (<.0001)	1
EEF1	-0.01464 (0.9180)	0.89588 (<.0001)	0.85383 (<.0001)	0.69175 (<.0001)	1
HMBS	0.05856 (0.6801)	0.87375 (<.0001)	0.81317 (<.0001)	0.68205 (<.0001)	0.86336 (<.0001)	1
TRFC	0.05672 (0.6896)	0.36186 (0.0084)	-0.01783 (0.9001)	-0.00355 (0.9801)	0.19983 9 (0.15550)	0.24023 9 (0.0863)	1
RPL5	0.07147 (0.6146)	0.73665 (<.0001)	0.82305 (<.0001)	0.63609 9 (<.0001)	0.86880 (<.0001)	0.87448 (<.0001)	0.13456 (0.3416)	1
LDHA	0.04835 (0.7336)	0.64899 (<.0001)	0.79144 (<.0001)	0.57684 9 (<.0001)	0.68718 (<.0001)	0.84655 (<.0001)	-0.01101 (0.9383)	0.77235 9 (<.0001)	1
UBC	0.15702 (0.2663)	0.38387 (0.0050)	0.47499 (0.0004)	0.26974 (0.0531)	0.44685 (0.0009)	0.51456 (<.0001)	0.08761 (0.5368)	0.44447 (0.0010)	0.52439 9 (<.0001)	1
B2M	0.11180 (0.4301)	0.68587 (<.0001)	0.32674 (0.0181)	0.35673 (0.0094)	0.55599 (<.0001)	0.73018 (<.0001)	0.58638 (<.0001)	0.55885 (<.0001)	0.43955 (0.0011)	0.29072 (0.0365)	1
ACTA1	0.03919 (0.7827)	0.68697 (<.0001)	0.82076 (<.0001)	0.59736 (<.0001)	0.74109 (<.0001)	0.85441 (<.0001)	0.18722 (0.1838)	0.87033 (<.0001)	0.88338 (<.0001)	0.57594 (<.0001)	0.54729 (<.0001)	1
HPRT1	0.04859 (0.7323)	0.72966 (<.0001)	0.76918 (<.0001)	0.64478 (<.0001)	0.78810 (<.0001)	0.80925 (<.0001)	0.26315 (0.0595)	0.76054 (<.0001)	0.70318 (<.0001)	0.65141 (<.0001)	0.55628 (<.0001)	0.80996 (<.0001)	1