Figure 1From: Let-7b expression determines response to chemotherapy through the regulation of Cyclin D1 in GlioblastomaCharacterization of the induced cisplatin-resistant U251 cells. (A) U251 and U251R cells were treated with indicated concentration of cisplatin for 72 hours and cell viability was tested by MTT. (B) IC50 of cisplatin in U251 and U251R cells was calculated.Back to article page