If the animal suddenly went into heat despite being sexually immature it was assumed that the woman was pregnant and her hormones were kicking off an early estrous cycle for the rodent.

如果被注射动物在性发育不成熟的情况下突然发热，就假定这名妇女怀孕了，且其荷尔蒙会使该啮齿动物发情期提前。