The processing method includes washing and cleaning the sheep placenta, then dried and ground into powder, which is sterilized, by peroxyacetic acid.

其配方主要包含以下组分，羊胎盘干燥粉末、山药、谷芽、肉苁蓉、枸杞子、复盆子、车前子。

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However, circumstantial evidence suggests that rodents (in the form of mice) and primates (in the form of both monkeys and humans) have also acquired endogenous retroviruses that help placenta formation, and have done so independently of what happened in sheep.

ECONOMIST: A virus has been subverted into helping its host