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Effect of post-hatch cold stress for 5 days (PD 32 to 37) on the mRNA levels of catalase, NOX4, and SOD2 in the liver (A–C), spleen (D–F), heart (G–I), and breast muscle (J–L) in TM broiler chickens (n = 5). a–d means ± SD with non-identical superscripts are significantly different.
