虽然研究表明,毛发的长度和颜色对 Fel d 1 的产生没有影响,但有一个生理因素似乎确实存在关联:猫的性别。1-6
事实
一些研究表明,性别与 Fel d 1 的产生相关。
研究表明,无论其绝育状态如何,雄性猫产生的 Fel d 1 水平通常高于已绝育/阉割的雄性猫和雌性猫。1,6-9
但是,每只猫的 Fel d 1 水平因遗传因素而异,正常雄性猫产生的 Fel d 1 可能会低于高产雌性或绝育雄性猫。1,6,8-11
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