title: [Tumor angiogenic activity (introductory note)].
abstract: Some classical experiments proving the existence of a Tumoral Angiogenic Factor are reproduced. They show the presence of T.A.F. in a solid tumor (Walker 256) and its apparent absence in a leukemia (L 1210). We point out that the biological activity oversteps the barrier of zoological class.
mesh_terms: D043925:Angiogenesis Inducing Agents / Q000032:analysis*; D000818:Animals; D002279:Carcinoma 256, Walker / Q000032:analysis* / Q000098:blood supply; D006133:Growth Substances / Q000032:analysis*; D007939:Leukemia L1210 / Q000032:analysis* / Q000098:blood supply; D051379:Mice; D051381:Rats; D013045:Species Specificity
chemical_list: D043925:Angiogenesis Inducing Agents; D006133:Growth Substances
vernacular_title: Activité angioformatrice au sein des tumeurs (note introductive).