Ans：

依據國動(NCB)官網，

1.NUDE 小鼠為毛髮角質化功能異常，但仍然有未完整角質化之毛髮生長，身體部分區域之皮膚仍會有小細毛出現的情形，是正常的現象，並不影響實驗。
2.部分 NUDE 小鼠會於 5 週齡會開始在背部長出稀疏短毛，約 8-9 週齡便會消失，但也有文獻指出這些細毛一直會到 4 月齡仍可存在。

參考文獻:
The nude mouse skin phenotype: the role of Foxn1 in hair follicle development and cycling. Exp Mol Pathol. 71(2):171-8, 2001.

Ans:

According to the National Center for Biomodels (NCB),

1. NUDE mice have abnormal hair keratinization function, but they still have incompletely keratinized hair growth. Small fine hairs still appear on the skin of some areas of the body. This is a normal phenomenon and does not affect the experiment.

2. Some NUDE mice will begin to grow sparse, short hairs on their backs at 5 weeks of age, which will disappear around 8-9 weeks of age. However, some literature indicates that these fine hairs can still exist up to 4 months of age.

Reference:

The nude mouse skin phenotype: the role of Foxn1 in hair follicle development and cycling. Exp Mol Pathol. 71(2):171-8, 2001.