TNF-α	forward:	5′-ATG AGC ACA GAA AGC ATG AT-3′
	reverse:	5′-TAC AGG CTT GTC ACT CGA AT-3′
IFN-γ	forward:	5′-AGC AAG GCG AAA AAG GAT GC-3′
	reverse:	5′-TCA TTG AAT GCT TGG CGC TG-3′
IL-4	forward:	5′-AGC CCT ACA GAC GAG CTC ACT C-3′
	reverse:	5′-ACG AGG TCA CAG GAG AAG GGA-3′
GAPDH (control)	forward:	5′-TGA TGG GTG TGA ACC ACG AG-3′
	reverse:	5′-GAT GGC ATG GAC TGT GGT CA-3′