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Sentence #566121

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BraveSentry BraveSentry March 21, 2011 March 21, 2011 at 1:36:31 PM UTC link Permalink

aren´t proteins always in plural unless you are talking about one specific protein?

darinmex darinmex March 21, 2011 March 21, 2011 at 4:37:29 PM UTC link Permalink

Good question. It seems to me that in this example "protein" is a mass noun (like fish, rice, or flour). If the emphasis is on amount then I think it is "protein" ("total blood protein", for example), but if the emphasis is on kinds or diversity, then it would be "proteins" ("The variety of proteins in the blood stream").

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