Krebiozen

Ivy's own Science letter responding to early criticism of the Krebiozen press announcement. Ivy restated his position that preliminary results warranted continued investigation and defended the decision to publicize findings before peer review. The letter is the primary source for Ivy's early public framing of Krebiozen as a substance deserving open-minded scientific assessment, and exemplifies the pattern of non-disclosure (composition, dose, manufacturing process) that characterized the Krebiozen Research Foundation throughout the 1950s.