Fig. 6
![Fig. 6](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12943-015-0460-8/MediaObjects/12943_2015_460_Fig6_HTML.gif)
High level of expression of BCL-xL, but not other BCL-2 family members, correlates with treatment-free survival of CLL patients. Kaplan-Meier curves for correlation of treatment-free survival in CLL patients with expression of: a BCL-xL, b BCL-2, c MCL-1, d BFL-1, e BCL-W, and f BCL-B mRNA levels were determined by RT-PCR. P values shown are for the log-rank test. RNA expression for each transcript was normalized to that obtained in lymphocytes isolated from healthy donors