Table 6. Ranking of candidate genes according to expression stability values (SV) calculated by ΔCt method.

For dataset symbols, refer to Table 3.

Sample set	Candidate reference gene
	AfEF1a		AfGAPDH1		AfGAPDH2		AfTBP2		AfTUA1		AfUBC1		AfUBC2
	SV	Rank	SV	Rank	SV	Rank	SV	Rank	SV	Rank	SV	Rank	SV	Rank
Total	0.879	5	0.79	3	0.915	6	0.851	4	1.065	7	0.723	1	0.752	2
NPC	0.854	5	0.79	4	0.857	6	0.715	2	0.92	7	0.698	1	0.734	3
NPC+SOT	0.744	6	0.673	3	0.711	5	0.693	4	0.744	7	0.651	2	0.599	1
NC+S	1.244	6	0.916	4	0.991	5	0.881	3	1.784	7	0.826	1	0.844	2
NC+SOT	0.813	6	0.736	4	0.782	5	0.728	3	0.834	7	0.706	2	0.672	1
PC+KG	0.705	4	0.693	3	0.935	7	0.690	2	0.794	6	0.682	1	0.755	5