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Mean ± SEM concentrations of OT (upper panel) and VIP (lower panel) in the mediobasal hypothalamus following suckling for 135 min in urethane-anesthetized lactating rats with intact in situ pituitary (Intact) or with pituitary removed (Hypox). Control intact rats and hypox rats were anesthetized with urethane and were deprived with pups: n = 5–10. *, p < 0.05.
