In chronic myelogenous leukemia, a malignant tumor of myeloid stem cells, all cells possess a distinctive (nonrandom) translocation referred to as Philadelphia chromosome.

• 在慢性髓细胞性白血病，一种髓性干细胞的恶性肿瘤，其所有肿瘤细胞拥有一个特征性的染色体的易位，所涉及的染色体称为费城染色体。