Evidence for possible emergence of immunochemically distinct nucleotide-peptides in malignant transformation.

Antibodies against nucleotide-peptides of beef heart do crossreact with nucleotide-peptides of other beef organs, but with nucleotide-peptides of Ehrlich tumor cells. Antibodies against the latter do not crossreact with nucleotide-peptides of normal organs, but do so with nucleotide-peptides of a rat hepatoma.