*From the Nelson Percy Research Foundation of Augustana Hospital, Chicago, Ill. This research has been supported, in part, by grants from the National Institute of Health, Heart Institute Grant H-5205, and Arthritis and Metabolic Disease Grant AM-6484. Appreciation is expressed for the technical and histologic assistance of Helene Smith, ASCP, and to Pfizer Laboratories for the Terramycin used.
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CHARLES F. WOODHOUSE (1964) studied this question.