HSP90AB1 and acute lymphoblastic leukemia: Interestingly, fluorescence microscopy revealed that SRC and HSP90 proteins were colocalized in the cytoplasm of T-ALL (R = 0.91 ± 0.07) and B-ALL cells (R = 0.89 ± 0.06) that were recovered ex vivo from the BM of PDX mice (Supplementary Fig. S10).