CD34 and acute myeloid leukemia: To evaluate Lin28A expression in AML, we performed quantitative real-time-PCR (qRT-PCR) in isolated blast cell samples from 38 AML patients at diagnosis, 7 AML cell lines (OCI-AML3, KG-1, Kasumi-1, NB4, CMK, ME-1 and MOLM-14) and CD34+ purified samples from 13 healthy donors.