Table 2.

Table of the stability of expression of potential HKGs in the brain and peripheral blood of experimental group of mice and peripheral blood of experimental group of mice and PD patients according to the RefFinder program.

Gene Rank 2	Mice												Humans
	Whole Brain		Cortex		Cerebellum		Striatum		Substantia Nigra		Blood		Peripheral Blood
	HKG	Score 1	HKG	Score	HKG	Score	HKG	Score	HKG	Score	HKG	Score	HKG	Score
1	Psmd6	1.86	Bcat2	1.32	Aars	1.78	Sars	1.50	Hprt	1.50	Hprt	1.78	POLR2A	1.41
2	Aars	2.00	Polr2f	2.06	Polr2f	1.86	Psmd7	2.21	Psmd7	2.00	Polr2f	1.86	PSMD6	2.45
3	Polr2f	2.11	Aars	2.63	Psmd6	2.45	Aars	3.25	Bcat2	3.00	Psmd6	2.45	PSMA5	2.82
4	Psmd7	3.08	Psmd6	3.46	Polr2a	2.63	Polr2a	3.46	Psmd6	3.83	Psmd7	2.83	PSMD7	3.98
5	Sars	4.16	Polr2a	5.00	Bcat2	5.38	Bcat2	4.60	Aars	4.43	Sars	4.61	SARS	4.23
6	Bcat2	6.24	Psmd7	5.09	Psmd7	5.48	Hprt	4.61	Polr2f	5.12	Bcat2	5.73	HPRT1	4.30
7	Polr2a	7.24	Sars	7.24	Sars	6.96	Psmd6	5.96	Sars	5.44	Polr2a	7.00	AARS1	6.00
8	Hprt	7.44	Hprt	7.44	Hprt	7.74	Polr2f	7.20	Polr2a	8.00	Aars	8.00

¹ Score—a comprehensive score calculated using the RefFinder program. ² Gene rank (a place in the rating of stability of expression) is based on sorting HKGs by their comprehensive scores from minimum to maximum. The first place in the ranking (gene rank = 1) is assigned to the gene with the minimum comprehensive score, and this gene is considered the most stably expressed HKG in the tissue under study. The last place in the ranking (gene rank = 8) is assigned to the gene with the maximum comprehensive score, and this HKG is considered the least stably expressed HKG.