[Human follicular oocytes (cytologic and physiologic characteristics)].

The morphology and the rate of degenerative changes were studied in the oocytes recovered from the antral follicles of the operated women. The rate of meiosis resumption, chromosome aberrations and electrophysiological properties were studied in the cultivated oocytes. These indices were compared in women of different age and pathology.

[Plasmid proteins inhibiting the activity of K and E1 colicins].

Plasmid proteins with m. w. of 14 000--15 000 were chromatographically isolated from lysates of E.

[Giant spreading villous tumors of the colon and rectum].

Two rare observations in which villous tumors affected the mucous membranes of the rectum and transverse colon are described. In one case the lesions extended for 60 cm, in the other the neoplasm occupied the entire inner surface of the rectum and colon as well as the adjacent area of the ileum, whereas in the area of the liver and spleen bends there were areas of adenocarcinoma. Both observations were characterized by marked inflammatory infiltration in some parts of the villous tumor.