ABL1 and myeloproliferative disorder: When introduced into stem cell and progenitor enriched mouse bone marrow, both p210BCR–ABL1 and p190BCR–ABL1 cause a myeloproliferative disease with expansion of granulocytic, myelomonocytic, and lymphoid compartments; however, the disease induced by p190BCR–ABL1 has a significantly shorter latency (7).