Milk Carbohydrates of the Echidna and the Platypus

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Science  13 Apr 1973:
Vol. 180, Issue 4082, pp. 201-203
DOI: 10.1126/science.180.4082.201


The principal neutral carbohydrate of three samples of echidna milk was identified as a trisaccharide, fucosyllactose. That of a sample of platypus milk was a tetrasaccharide, difucosyllactose. Free lactose was found in small amounts only. The milk carbohydrate of monotremes is distinguished from that of both marsupials and placental mammals by its high fucose content.