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Effects of saikosaponin a on liver injury in HELP-challenged laying hens (n = 6). (A) H&E staining of liver section, viewed under a microscope (100×). (B) Liver superoxide dismutase (SOD) activity, serum aspartate aminotransferase (AST) levels, and serum alanine transaminase (ALT) levels. a,bDifferent letters represent significant differences (P < 0.05). CON, control group; HELP, high-energy and low-protein diet group; HELP + SSa, high-energy and low-protein with saikosaponin a group.
