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Thy 1 glycoprotein

(Science: cell biology, immunology) A molecule of 19 kD found on the surface of lymphoid and brain tissues of some mammals. Used as a marker for t lymphocytes in those species displaying it. Two allelic forms are known, thy 1a, Thy 1b, determining Thy 1.1. And Thy 1.2. Molecules respectively, formerly known as _ AKR and _ C3H respectively. Functions unclear.