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Osteoclast activity in mouse calvarial culture is not affected by ghrelin. Calvariae labeled in vivo with 45Ca were collected and incubated ex vivo with experimental substances or vehicle for 48 hours. Values are expressed as percent released 45Ca detected over total 45Ca injected (3 μCi). PTH: parathyroid hormone (positive control). Data are mean ± SEM; *indicates P < 0.05 compared to untreated control.
