Medicine: Promising PAS

U.S. physicians who have been skeptical about using PAS (para-aminosalicylic acid) to treat tuberculosis are being converted. Three doctors on the staff of the Arroyo Del Valle Sanatorium of Alameda County (Calif.) report in the current Stanford Medical Bulletin that 150 patients in the San Francisco Bay area have had PAS treatments with "very promising" results.

Most closely studied were the patients at Arroyo Del Valle. Of 22 of them who got the drug for more than two months, 16 showed moderate to marked improvement; five showed slight improvement. The one exception, whose...

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