Table 2. Tissue-specific expression profiles of candidate reference genes.

Data are shown as raw Cq values and represented as mean ± standard error (SE).

Gene	All tissues	Gill	Hemocyte	Intestine	Leiblein	Liver	Kidney	Mantle	Gonad
EF-1α	20.70 ± 0.38	19.14 ± 0.36	21.81 ± 0.74	23.00 ± 1.35	22.48 ± 0.92	20.35 ± 0.46	20.73 ± 0.68	16.98 ± 0.61	21.09 ± 0.46
ACT	26.50 ± 0.47	25.20 ± 0.45	28.51 ± 0.77	29.24 ± 1.35	28.24 ± 0.85	26.88 ± 0.52	26.56 ± 0.73	20.57 ± 0.44	26.80 ± 0.55
COX1	19.26 ± 0.41	17.36 ± 0.31	20.39 ± 0.97	21.47 ± 1.25	21.49 ± 0.91	18.57 ± 0.56	19.10 ± 0.77	15.36 ± 0.48	20.32 ± 0.68
NDUFA7	26.92 ± 0.39	24.69 ± 0.32	28.42 ± 0.79	29.49 ± 1.19	28.48 ± 1.00	26.54 ± 0.56	27.40 ± 0.60	23.41 ± 0.73	26.94 ± 0.47
RL5	23.14 ± 0.41	21.92 ± 0.42	24.19 ± 0.81	25.91 ± 1.45	24.57 ± 0.95	22.83 ± 0.44	23.89 ± 0.67	18.74 ± 0.58	23.05 ± 0.53
RL28	22.59 ± 0.37	21.47 ± 0.41	23.65 ± 0.52	24.96 ± 1.19	24.18 ± 0.87	22.13 ± 0.42	23.42 ± 0.75	18.63 ± 0.58	22.31 ± 0.61
GAPDH	24.14 ± 0.42	21.60 ± 0.44	24.18 ± 0.71	26.95 ± 1.11	24.98 ± 0.95	24.19 ± 0.54	24.72 ± 0.59	20.11 ± 0.63	26.44 ± 0.84
TUBB	25.95 ± 0.43	23.16 ± 0.58	26.72 ± 0.35	25.78 ± 1.37	24.95 ± 0.72	23.42 ± 0.78	26.08 ± 0.80	28.00 ± 0.71	29.48 ± 1.33
PPIA	25.56 ± 0.41	24.43 ± 0.35	26.15 ± 0.57	28.41 ± 1.19	26.74 ± 1.03	24.78 ± 0.72	25.32 ± 0.56	21.67 ± 0.71	26.99 ± 1.20
RS25	24.95 ± 0.39	24.27 ± 0.26	24.95 ± 0.42	27.18 ± 1.39	26.22 ± 0.91	24.42 ± 0.62	25.70 ± 0.80	20.59 ± 0.45	26.30 ± 0.82
UBE2	26.75 ± 0.48	24.49 ± 0.46	26.60 ± 0.79	29.71 ± 1.46	28.58 ± 0.85	26.65 ± 0.57	27.19 ± 1.11	22.09 ± 0.88	28.67 ± 1.18
RS8	24.15 ± 0.43	22.95 ± 0.61	24.45 ± 0.77	26.74 ± 1.52	25.80 ± 0.79	23.50 ± 0.57	24.57 ± 0.85	19.81 ± 0.55	25.42 ± 0.97
HH3	30.36 ± 0.41	28.45 ± 0.42	30.13 ± 0.69	32.84 ± 0.44	32.25 ± 0.80	30.58 ± 0.53	30.48 ± 0.78	26.04 ± 1.05	32.14 ± 0.93