STRUCTURE OF THE PIGMENT OF MACPALXOCHITL
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Instituto de Salubridad y Enfermedades Tropicales, CD MEXICO, DF, MEX
INSTITUTO NACIONAL DE CARDIOLOGIA, CD. MEXICO, DF, MEX
INSTITUTO NACIONAL DE CARDIOLOGIA, CD. MEXICO, DF, MEX
Abstract
Over 500 serum specimens chosen from individuals having had a history of typhus fever in various parts of Mexico were tested against specific classic and murine typhus antigens according to the technique of Plotz, Wertman, and Bennett 184 out of 237 posi