CD24 and cancer: CD24 overexpression has been observed in a variety of cancer cell lineages, such as in breast [19], ovarian [20] and prostate [21] cancer, bladder [22], lung [23,24] and hepatocellular [25] carcinoma, and non-Hodgkin B cell lymphoma [26], and is considered a significant marker for cancer diagnosis and prognosis [2,3].