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. 2022 Jan 26;201(1):272–281. doi: 10.1007/s12011-022-03126-5

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Fig. 3 — Effect of Zn-NPs treatment on the levels of caspase-3 (U/ml) and CEA levels (ng/ml). Results are given as mean ± SE. Means are significantly different at p < 0.05 (a) Significance compared to control group. (b) Significance compared to Fe-NTA group