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The morphology of 293a cells changed after passage.
293a cells became slender after passage. According to the relevant published data, the reproductive process of 293A has been good in previous generations, and the cell shape is round. However, after 2~3 generations, the cell morphology of 293A tends to be slender and its reproductive ability is not as strong as that of the first generation, which is basically caused by the changes of cell genes.