Epithelioid sarcoma is a rare, aggressive keratin-positive sarcoma that co-expresses CD34 in 50% of cases and may mimic an angiosarcoma. Recently, we have observed one case of epithelioid sarcoma ...

A total of 14 417 villus sections were studied. The relationship of cell shedding to leukocytes (CD45), macrophages (CD68) and blood vessels (CD34) were studied by immunohistochemistry.

The key to the new finding is the discovery by the St. Jude team that the antibody currently used to seek out and "capture" CD34+ stem cells from the donated bone marrow actually identifies only a ...