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Ross-Jones test

Pronunciation: ros jonz

Definition: an obsolete test for an excess of globulin in the cerebrospinal fluid; 1 mL of cerebrospinal fluid is carefully floated over 2 mL of a concentrated ammonium sulfate solution; if globulin is present in excess, a fine white ring appears at the line of junction in about 3 min.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.