Fig. 3. Cumulative litter weight change (A) in pups suckled by wild-type dams (circles) or transgenic dams (squares), and (B) in pups alternately suckled by wild-type dams (circles) and transgenic dams (squares), where litters were exchanged on a daily basis between wild-type and transgenic dams. Note that the weight gains in B do not represent the actual weight gain of individual litters but represent the cumulative weight gain achieved by litters (whether transgenic or wild type) when being nursed by the wild-type or transgenic dam. Values are mean±s.e.m. of 5-6 mice.

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