Table 1. Primers information and RT-qPCR conditions used in the trials.

Gene a	NCBI accession number	Oligo sequence (5'→3'): Forward—Reverse	Amplicon length	Annealing temperature
OR51E1	XM_005656617.1	CGCGTCAACATCATCTATGGC CGCACACATGGGAGACACAC	160pb	59°C
HMBS	DQ845174	AGGATGGGCAACTCTACCTG GATGGTGGCCTGCATAGTCT	83 bp	62°C
RPL4	DQ845176	CAAGAGTAACTACAACCTTC GAACTCTACGATGAATCTTC	122 bp	60°C
TBP I	DQ845178	AACAGTTCAGTAGTTATGAGCCAGA AGATGTTCTCAAACGCTTCG	153 bp	60°C

^a OR51E1, olfactory receptor, family 51, subfamily E, member 1; HMBS, hydroxymethylbilane synthase; RPL4, ribosomal protein L4; TBP, TATA box binding protein.