[Distribution of 131I-labelled growth hormone in mice of high and low cancer lines].

It was shown that an uptake of the labeled STH in the mammary tissue of mice C3H is twice as that as in mice C57Bl, and by 40% higher than in mice CC57Br. In mammary tumors of mice C3H the label uptake was 30% higher than in mammary glands without any visible tumor. These facts may evidence that the hormone of growth take part in providing the conditions which contribute to the origination and development of mammary gland tumors.