Table 6.

Specific primers for each gene.

Primer	Sequence	Primer	Sequence
PEPT1 (NM_001003036)	Fw: TTCTCCAATCATCCAACCTTGA Rv: TGCTCTGCGTTCCGATTACA	HMBS (XM_014113375.1)	Fw: CATGTATGCTGTGGGTCAGG Rv: CAGGTACAGTTGCCCATCCT
PEPT2 (XM_545128)	Fw: CAAACGGTACACACAGTCCTATCAT Rv: TGATACCTCCTGTTCCCAAAGC	UROS (XM_005637839.2)	Fw: TGGCCAAGATCCATACATCA Rv: ACAGCTCCACTGCTTCCACT
GAT2 (XM_003639941)	Fw: TCATTCTTGGCGTGTCTGTCA Rv: ACATACCGCCCTCTGTAAGCA	UROD (XM_005629077.2)	Fw: GCAGTGGCCTCTGAACTAGG Rv: ATTCGAAGCAGCTGGTGACT
TAUT (NM_001003311)	Fw: TGGCGCAGGCATCAAGTT Rv: GATGGCATAGGAGAAGAATATTTGG	CPOX (XM_545070)	Fw: CGCGCGATGGGAGTACAT Rv: TCGGATGGCGCAGAACTT
PAT1 (XM_536073)	Fw: CAGCGTGTCGCCATTGC Rv: GCGCTGATGTTGCCTCATC	FECH (XM_847843)	Fw: TGGACCGAGACCTCATGACA Rv: GGCGTTTGGCGATGATTG
ABCG2 (NM_001048021)	Fw: TCTGGATGAGCCCACAACTG Rv: TTCAGGAGCAAAAGGACAGCAT	HO-1 (NM_001194969)	Fw: GGCAGAGGGTCATCGAAGAG Rv: CTCCTCAAACAGCTGAATGTTCA
ABCB6 (XM_536073)	Fw: CAGCGTGTCGCCATTGC Rv: GCGCTGATGTTGCCTCATC	β-actin (NM_001195845)	Fw: GGCACCCAGCACAATGAAG Rv: GAGCCCCCAATCCACACA

Peptide transporter 1 (PEPT1), peptide transporter 2 (PEPT2), GABA transporter 2 (GAT2), taurine transporter (TAUT), H+/amino acid transporter 1 (PAT1), ATP-binding cassette transporter G2 (ABCG2), ATP-binding cassette transporter B6 (ABCB6), hydroxymethylbilane synthase (HMBS), uroporphyrinogen III synthase (UROS), uroporphyrinogen III decarboxylase (UROD), coproporphyrinogen oxidase (CPOX), ferrochelatase (FECH), and heme oxigenase 1 (HO-1).