Fig. 1. Expression of transfected p53 in K562 cells. p53-transfected K562 clones A2, A4, A5, and A10 and mock-transfected clones M1 and M2 were subjected to Western blot, as described in "Materials and Methods." Arrow to the right, position of the p53 protein at Mr 53,000 in the transfected clones. Left, positions of molecular weight standards.