NRF-1:	forward: 5′-GAGTGACCCAAACCGAACA-3′,
	reverse: 5′-GGAGTTGA GTATGTCCGAGT-3′;
TFAM:	forward: 5′-GGTGTATGAAGCGGATTT-3′,
	reverse: 5′-CTTTCTTCTTTAGGCGTTT-3′;
GAPDH:	forward: 5′-AAGGTGAAGGTCGGAGTCAA-3′,
	reverse: 5′-AATGAAGGGGTCATTGATGG-3′.