结论：妊娠奶牛奶或以妊娠奶牛奶为主的市售纯牛奶中一定水平的E2和P4可能升高雌性SD幼鼠血清hdl - C水平。

Conclusions: a certain levels of E2 and P4 in milk which come from either pregnant cows or commercial whole milk mainly from pregnant cows may perhaps increase serum HDL-C of juvenile female SD rat.

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牛奶中某些蛋白，或者全部蛋白谱图状态可能与奶牛妊娠阶段有关。

Some proteins or the profile of a set of proteins present in the milk of lactating cows may be related to the pregnancy status of dairy cows.

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