Invasive phenotype observed in 1,3-bis(2-chloroethyl)-1-nitrosourea-resistant sublines of 9L rat glioma cells: a tumor model mimicking a recurrent malignant glioma.

Abstract excerpt

OBJECT: Chemotherapy is suspected of having an effect on the generation of phenotypical heterogeneity and the development of drug resistance in tumors. Recurrent gliomas feature drug resistance as well as greater invasive growth than original tumors. The authors investigated phenotypical changes...

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