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Effects of collagen‐peptide administration on cytokine production by splenocytes. BALB/c mice fed a diet with or without collagen peptides were intraperitoneally injected with 10 μg of OVA and Alum. Splenocytes were collected 10 days after the injection and cultured with 10 μg/ml of OVA for 72 h before cytokine levels in culture supernatants were determined. Values are means ± SEM (n = 6). Representative data of two independent experiments were shown. *P < 0.05.
