after 30 min of treatment with 1.5 x 10 ( -10 ) m acth , free catalytic units were observed only in the cytoplasm of y-1 cells , whereas a similar time of exposure to 3 x 10 ( -10 ) m acth led to the appearance of catalytic units in nucleolus as well as in cytoplasm .
C0007634
cells
C0007609
nucleolus