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Spreading of CHO-α3 cells on laminin-5. Mutant and wild-type CHO transfectants were allowed to spread on laminin-5 (coated at 2 μg/ml) in the presence or absence of treatment with 100 nM PMA. Images of typical cells were recorded at 6, 18, and 30 min after cell plating. Magnification, 40×.
