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Collagen protects cells from immunotoxin mediated cell killing. A431/H9, HAY, or KLM1 cells were seeded on plastic or collagen I-coated dishes at the same density, allowed to attach for 24 hours, treated with 25 μg/ml soluble collagen I for 3 hours followed by treatment with 100ng/ml RG7787 for 48 hours then images were taken. Images shown are representative of two independent experiments and of replicate fields per treatment.
