Table 2.

Average concentrations of all measured elements in all analyzed tissues with a comparison between cryo-samples and FFPE preparation; all units are given in μg g⁻¹, and errors are given as a single standard deviation (n = 3)

		Brain	Liver	Heart	Lung	Kidney	Muscle
Na	Cryo	528 ± 78.6	238 ± 2.83	347 ± 42.3	322.9 ± 33.3	1040 ± 91.3	610 ± 13.3
	FFPE	13.4 ± 1.82	9.32 ± 1.10	7.62 ± 1.16	2.2 ± 0.2	14.7 ± 2.19	7.53 ± 0.35
Mg	Cryo	78.9 ± 11.7	79.0 ± 2.57	61.0 ± 6.15	39.1 ± 5.0	116 ± 7.74	42.6 ± 6.82
	FFPE	44.9 ± 2.56	28.6 ± 1.94	25.8 ± 3.63	8.38 ± 0.6	63.0 ± 8.87	35.3 ± 4.97
K	Cryo	2510 ± 353	1470 ± 11.3	1230 ± 51	591 ± 78.9	2240 ± 215	743 ± 48.4
	FFPE	5.51 ± 0.55	5.27 ± 0.62	5.2 ± 0.8	2.14 ± 0.21	6.47 ± 0.45	5.17 ± 0.83
Ca	Cryo	73.8 ± 10.4	48.9 ± 4.23	97.9 ± 8.2	73.9 ± 10.3	80.2 ± 9.43	52.3 ± 3.23
	FFPE	822 ± 58.8	398 ± 55.8	393.2 ± 14.2	133 ± 17.7	647 ± 29.0	683 ± 81.0
Mn	Cryo	0.48 ± 0.05	2.37 ± 0.33	1.3 ± 0.1	0.12 ± 0.00	2.02 ± 0.27	0.25 ± 0.01
	FFPE	0.41 ± 0.05	2.26 ± 0.24	1.5 ± 0.1	0.12 ± 0.01	2.45 ± 0.12	0.31 ± 0.05
Fe	Cryo	29.0 ± 4.59	256 ± 29.3	167.0 ± 11.6	59.2 ± 3.27	140 ± 9.87	18.6 ± 1.29
	FFPE	24.3 ± 3.25	202 ± 25.4	143.4 ± 5.8	43.8 ± 0.95	106 ± 1.23	16.2 ± 2.26
Ni	Cryo	1.32 ± 0.11	1.92 ± 0.31	1.3 ± 0.1	0.55 ± 0.04	1.32 ± 0.24	0.88 ± 0.12
	FFPE	1.02 ± 0.10	1.78 ± 0.17	1.2 ± 0.1	0.45 ± 0.06	1.17 ± 0.12	0.95 ± 0.16
Cu	Cryo	5.29 ± 0.54	110 ± 7.13	13.1 ± 1.1	0.90 ± 0.08	4.32 ± 0.38	1.43 ± 0.13
	FFPE	6.27 ± 1.32	100 ± 10.6	11.5 ± 1.4	1.22 ± 0.24	5.04 ± 0.78	1.68 ± 0.21
Zn	Cryo	16.5 ± 1.44	23.7 ± 1.85	10.3 ± 1.4	9.96 ± 0.51	11.6 ± 1.77	23.9 ± 2.28
	FFPE	191 ± 22.6	90.4 ± 7.53	186.2 ± 12.2	19.3 ± 3.07	82.7 ± 6.63	178 ± 9.45