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Alterations in plasma levels of active ghrelin in young (3-month-old) or aged (24-month-old) rats at 4 h after normal saline (Vehicle) or LPS (LPS) injection. Data are presented as means ± SE (n=5–6/group) and compared by one-way analysis of variance (ANOVA) and Student-Newman-Keuls test: *P < 0.05 versus corresponding Vehicle group; #P < 0.05 versus Young Vehicle group.
