[The immunogistochemical aspects of the angiogenesis by Ewing's sarcoma].

Results of observation were analyzed in 68 patients with Ewing's sarcoma. Reagents made by DAKO (France) such as CD-31, endothelial cell, clone JC 70A, isotype: Lg GI, kappa 02/1 ml were used in the study. It was estimated, that CD31 expression activity in endothelial elements was inversely proportional and reliably correlated with malignant process by the Ewing's sarcoma.

[Clinico-morphologic and immunohystochemical characteristics of the angiogenesis by malignant osseous lymphoma].

Clinico-morphologic and immunohystochemical characteristics of the angiogenesis were analyzed in 24 patients with malignant osseous lymphoma. Maximal density of CD-31 positive cells was registered. Immunopositivity was shown for cytoplasm and cell wall.