[Ornithine decarboxylase activity and polyamine content in human adenocarcinomas of the stomach and large intestine].

Ornithine decarboxylase (ODC) activity and polyamine content were studied in the intact mucosa and tumours of human stomach and large intestine adenocarcinomas. ODC activity has been found to be much higher in the neoplastic tissue than in the corresponding intact mucosa. Concentrations of polyamines in neoplasms were also higher than in mucosa. Interrelation was found between ODC activity polyamine content and degree of differentiation of the tumour cells in rectal adenocarcinomas.