Table 1. Primer sequences used for qPCR.

Gene of interest		Primer sequence (5′-3′)	Amplicon size (bp)
Symbol	Full name
18 s	18 s ribosomal RNA	F–CCA TCC AAT CGG TAG TAG CG	100
		R–GTA ACC CGT TGA ACC CCA TT
Cyp26b1	Cytochrome P450, family 26, subfamily b, polypeptide 1	F–GCA GTA TAT GCT TAT GAC ATC TGA ATC	77
		R–CCT GAC CAC TCA CCA ACA AA
Raldh1	Retinal dehydrogenase 1	F–TGG GAA TAC CGT GGT TGT CAA GC	125
		R–TTG GCC CAT AAC CAG GGA CAA T
Rara	Retinoic acid receptor, alpha	F–CAC GCC TGAG CAA GAC ACA ATG A	106
		R–CTA GCT CCG CTG TCA TCT CAT AG
Rarb	Retinoic acid receptor, beta	F–GGG CAT GTC CAA AGA GTC TGT TAG	101
		R–CTA GCT CCG CTG TCA TCT CAT AG
Rarg	Retinoic acid receptor, gamma	F–ACT AAG GGA GCA GAA AGG GCT AT	112
		R–TCG AGG AGT CGT CCT CAA ACA
Ucp1	Uncoupling protein 1	F–GGC AGC CTA CAG AGG TCG	117
		R–AGC TTT CTG TGG TGG CTA TAA CT