an activated 40s ribosomal protein s6 kinase has been demonstrated previously in cytosolic extracts from proliferating as well as resting cells of a very undifferentiated rat ascites hepatoma cell line ( yoshida ah 130 ) , grown in vivo ( cell biol . int . rep. , 1986 , 10 , 821-831 ) .
C1383501
cytosolic
C0007634
cell