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用９周～３９周引产胎儿标本７２例，取右耳廓石蜡切片，ＨＥ染色，光镜观察其皮肤及附属器的组织发生。观察结果表明，表皮：９周时为多层细胞，１３周表皮表层细胞变扁平，２１周出现颗粒层，２４周出现角化层，３０周后其结构逐渐与成人近似；毛发：９周在耳尖和耳垂见少量毛芽，１３周毛球和毛根形成，１４周毛干和毛乳头形成，１６周结构较典型；皮脂腺：１４周在毛囊上部出现皮脂腺芽，２２周发达；汗腺：１４周出现汗腺芽，２４周在耳尖部出现导管和腺泡，２６周见肌上皮细胞。对胎儿耳廓皮肤及附属器的组织发生进行了讨论。
Seventy-two fetuses with induced abortion were collected from 9 weeks to 39 weeks, paraffin sections of the right auricle were obtained and stained with hematoxylin-eosin (HE). The appearance of skin and appendages was observed with light microscope. The results showed that the epidermis was a multilayered cell at 9 weeks, and the epidermis cells became flattened at 13 weeks with granular layer at 21 weeks and keratinized layer at 24 weeks. A small amount of hair buds were observed in the ear and ear lobes, hair ball and hair root formed at 13 weeks, hair shaft and dermal papilla formed at 14 weeks, and the structure of 16 weeks was typical. Sebaceous gland: sebaceous gland bud emerged at upper part of hair follicle in 14 weeks, developed at 22 weeks; 24 weeks in the tip of the ear catheter and acinar, 26 weeks to see myoepithelial cells. The histological appearance of the fetal auricle skin and appendages is discussed.