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SKOV-3 cells were treated by TGF-beta (20 ng/mL) every 24 h for five times (5 days) with or without Cd. Subsequently, the CD44+/CD117+ cells were collected and treated with or without cisplatin for 24 h. Data was shown by mean ± SD (n = 3). (a.b.c.d) values with one different letter superscript are significantly different from each other (p<0.05).
