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The effect of PTPMEG and PTPMEGCS on the growth of COS-7 cells in soft agar. (A) Plates seeded with clones expressing vector in the top row, native PTPMEG in the middle, and inactive mutant PTPMEGCS in the bottom. (×1.) (B) Representative fields of the same plates. (×20.) The number of colonies on each 60-mm plate is listed in Table 2.
