In “Specific Binding of T Lymphocytes to Macrophages. II. Role of Macrophage-Associated Antigen” by Shlomo Z. Ben-Sasson, Mary F. Lipscomb, Thomas F. Tucker, and Jonathan W. Uhr in the October issue of The Journal of Immunology, Volume 119, Number 4, page 1495, column 1, paragraph 2, line 11, reads “A p > 9.25…. This should read “A p > 0.25….”

In the same article on p. 1499, column 2, the sentence beginning on line 8 should read “Pronase a more powerful and less specific enzyme….”

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