CD34 and acute myeloid leukemia: CD34+ AML (cases with >5% blast cells being CD34+) BM samples (n = 29) consisted of either abnormally expanded LMPP-/GMP-like populations (>90% of CD34+ blasts, in 15/29 samples), MPP-/CMP-like populations (>90% of blasts, n = 6) (examples in S1 Fig), GMP-like (>99% of blasts, n = 1), CMP-/GMP-like (>99% of blasts, n = 2), or a mixture of all SPC-types (n = 5).