Polythelia and polymastia usually occur along the embryonic milk lines extending from the axilla to the groin.
摘要多乳房及多乳头是位
下到腹股沟的胚胎乳线
。
Polythelia and polymastia usually occur along the embryonic milk lines extending from the axilla to the groin.
摘要多乳房及多乳头是位下到腹股沟的胚胎乳线。
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