Table I.

PCR primers sequence used in this work.

Gene symbol	Forward primer (5′ to 3′)	Reverse primer (5′ to 3′)	Amplicon size (bp)	Author (Refs.)
RFC1	CCTCGTGTGCTACCTTTGCTT	TGATCTCGTTCGTGACCTGCT	125	Abdel-Haleem et al, (17)
GGH	AACCTCTGACTGCCAATTTCCATAA	TCTCTGGATGCCACTGGACAC	177	Obata et al, (18)
FPGS	GGCTGGAGGAGACCAAGGATGGA	CATGAGTGTCAGGAAGC	68	Ogawa et al, (19)
TS	GCAAAGAGTGATTGACACCATCAA	CAGAGGAAGATCTCTTGGATTCCAA	85	Seitz et al, (20)
ATIC	TCTGATGCCTTCTTCCCTTT	AGGTTCGTATGAGCGAGGAT	149	Malek et al, (21)
MTHFR	GGCCATCTGCACAAAGCTAAG	AACTCACTTCGGATGTGCTTCAC	140	Liu et al, (22)
MTHFD1	CGTGGGCAGCGGACTAA	CCTTATTTGCGCGGAGATCT	76	Kawakami et al, (23)
MTRR	GCCCGGCATTTCTATGACAC	GCCAGAGTCCAGCAATCCAC	85	Zhao et al, (24)
MS	TAAGATTTGCAAAGGTTGGGTCTGA	CTGGACATACAGGTGGGAGTTGG	172	Huang et al, (25)
ABCB1	GCTCAGACAGGATGTGAGTTGG	ATAGCCCCTTTAACTTGAGCAGC	99	Yoshida et al, (26)
ABCC1	TACCTCCTGTGGCTGAATCTGG	CCGATTGTCTTTGCTCTTCATG	138	Yoshida et al, (26)
HPRT	AAGCTTGCTGGTGAAAAGG	AAACATGATTCAAATCCCTGA	134	Ramos-Nino et al, (27)