[Microroentgenography of transplantable tumors]

The results of microroentgenographic study of vascularisation of Ehrlich's carcinoma in albino mice 2, 24 and 48 hrs after implantation are discussed. Pronounced reorganisation of blood vessels occurs in muscles, bone lymph nodes, skin and subcutaneous fat within the first hours after tumor implantation. Venous collectors of peripheral blood vessels become dilated due to the formation of arterio-venous anastamoses and the by-passing of capillary beds. The formation of arterio-venous shunts is a biological factor which is conducive to hypoxia development at tumor site.