By analyzing the villi that provide contact with the mother's blood to the fetal membrane, Muneta deduced that the fetus must be living in an environment of elevated ketones from the start of pregnancy.

通过分析在母体血液和胎膜之间起着纽带作用的绒毛，Muneta 推导出，在母体受孕之，初胎儿便生活在一个酮体水平较高的环境中。