Table1. Candidate reference genes evaluated in this study.

Gene symbol	Gene product name	Accession number	Function
Ablim1†	Actin-binding LIM protein 1	NM_001044394	Mediates interaction between actin filaments and cytoplasmic targets
Actb§	Actin, beta	NM_031144	Cytoskeletal structural protein
B2m§	Beta-2 microglobulin	NM_012512	Beta-chain of MHC class I molecules
Efha1†	EF-hand domain family, member A1	NM_134396	Stimulates tubulin polymerization; calcium ion binding
Gapdh§	Glyceraldehyde-3-phosphate dehydrogenase	NM_017008	Oxidoreductase in glycolysis and gluconeogenesis
Hprt1§	Hypoxanthine phosphoribosyltransferase 1	NM_012583	Catalytic enzyme in purine salvage pathway
Ldhal6b†	Lactate dehydrogenase A-like 6B	NM_183334	Catalyzes lactate-pyruvate interconversion; involved in glycolysis
Magi2†	Membrane associated guanylate kinase, WW and PDZ domain containing 2	NM_053621	Synaptic scaffolding molecule
Mterf†	Mitochondrial transcription termination factor	NM_053499	Regulates mtDNA transcription
Sdha§	Succinate dehydrogenase complex, subunit A	NM_130428	Catalyzes mitochondrial succinate oxidation
Sptbn1†	Spectrin, beta, non-erythrocytic 1	NM_001013130	Actin cross-linking and molecular scaffold protein
Tbc1d22a†	TBC1 domain family, member 22A	XM_001078492	Regulates Rab GTPase activity
Wrnip1†	Werner helicase interacting protein 1	NM_172332	Interacts with Werner syndrome ATP-dependent helicase; potential role in replication and other nuclear transactions
Ywhaz§	Tyrosine 3-monooxygenase	NM_013011	Component of the mitochondrial import stimulation factor; regulates signal transduction by binding to phosphorylated serine residues on a variety of signaling molecules

^†Candidate identified as mid-90% fluorescent intensity in microarray screen;

^§Candidate identified in literature review.