The Journal of Experimental Medicine, Vol 38, 81-85,
Copyright, 1923, by The Rockefeller Institute for Medical Research New York
IMMUNOLOGICAL RELATIONSHIPS OF CELL CONSTITUENTS OF PNEUMOCOCCUS
O. T. Avery M.D.1 and
M. Heidelberger Ph.D.1
1 From the Hospital of The Rockefeller Institute for Medical Research.
1. The protein precipitated by acetic acid from solutions of pneumococci shows chemical reactions characteristic of nucleoprotein and mucoid.
2. The protein of pneumococcus, as contrasted with the non-protein soluble specific substance, exhibits species specificity rather than the type specificity characteristic of the latter.
Submitted on March 18, 1923