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This is a second edition of one of the valuable series of monographs on biochemistry, the first edition having been published in 1918. Perhaps the most striking thing is the relatively small amount of advance made in this field in the intervening years. Not enough has yet been learned about these important constituents of all living cells even to enable a satisfactory nomenclature to be agreed on. The authors use the term "lipins" to designate the phosphatides and cerebrosides most commonly called lipoids, whereas in this country the same name has been used by several writers as a broader term to include a much wider group of substances. The term "lipides," recommended by the International Conference of Chemistry to cover the same group as MacLean's lipins, has encountered objection, so the question of what to call these substances is still unsettled and usage remains chaotic. Like the rest of the
Lecithin and Allied Substances—the Lipins. JAMA. 1927;88(17):1344. doi:10.1001/jama.1927.02680430046033
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