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Thirty twomaleSpragueDawleyrats ,eachweighingapproximately 2 2 0g ,wereused .Theratsunderwentplace mentofacentralvenouscatheterthrough
Thirty twomaleSpragueDawleyrats, eachweighingapproximately220g, wereused.Theratsunderwentplace mentofacentralvenouscatheterthrough