Polythelia and polymastia usually occur along the embryonic milk lines extending from the axilla to the groin.
摘要
乳

乳头是位于从腋下到腹股沟的胚胎乳线
。
乳
畸形Polythelia and polymastia usually occur along the embryonic milk lines extending from the axilla to the groin.
摘要
乳

乳头是位于从腋下到腹股沟的胚胎乳线
。
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