Localization of factor VIII-related antigen in vascular endothelial cells using an immunoperoxidase method.

Using an immunoperoxidase method, factor VIII-related antigen was localized in vascular endothelial cells. This method provides a marker for endothelial cells at the tissue level and may be used to confirm the vascular nature of a variety of hyperplastic and neoplastic lesions of skin, soft tissues, and other locations.