Table 1. Sequences of primers used in real-time PCR.

Gene Symbol	Sense or antisense	Sequence
ALAD	Sense	5’-AACCAGCATAAATACTGCCTGAGGA-3’
	Antisense	5’-TGGCACCTCTAGCAGTCAGGAA-3’
HMBS	Sense	5’-AACAGCCCAAAGATGAGAGTGATTC-3’
	Antisense	5’-AATGTTGCCACCACACTGTCC-3’
UROD	Sense	5’-CCCTGTGCCTTGTATGCATCTG-3’
	Antisense	5’-TGTAGCGATGTGGTCCAAAGTCA-3’
UROS	Sense	5’-CCTGAACAGCTACTATTCCGAGCA-3’
	Antisense	5’-CTTGAGACTGTATGTGAGGCCAGAG-3’
ABCB6	Sense	5’-TTCACTGTGATGCCTGGACAGA-3’
	Antisense	5’-GGATGCAGCCAGAGCTGATG-3’
CPOX	Sense	5’-CACTCCAGGATCCAGAATTGAAAG-3’
	Antisense	5’-TGCATCAACGCACCCAGTC-3’
PPOX	Sense	5’-GCCCTTGAAACCCACCTGACTA-3’
	Antisense	5’-ACTAATAACGTGGTCAGCCTCCAGA-3’
FECH	Sense	5’-AGGCCATTAAGATGGATGTTGGAA-3’
	Antisense	5’-CTGTCAGAGTGAAGGCTCACAAGAA-3’
PEPT1	Sense	5’-TCACCTGTGGCGAAGTGGTC-3’
	Antisense	5’-GCCACGATGAGCACAATGATG-3’
ABCG2	Sense	5’-GCAACCATCAATTCAGGTCAAGA-3’
	Antisense	5’-GAAACACAACACTTGGCTGTAGCA-3’
Actin	Sense	5’-TGGCACCCAGCACAATGAA-3’
	Antisense	5’-CTAAGTCATAGTCCGCCTAGAAGCA-3’