title: The in vitro effect of a calf thymus extract on the peripheral blood lymphocytes of patients with warts.
abstract: T and B lymphocyte populations were evaluated in forty-one patients with multiple recurring warts. Active rosettes (T-Ea) and total T lymphocytes (T-Et) were significantly decreased. The in vitro effect of a calf thymus extract (TP-I) on peripheral blood lymphocytes was evaluated in thirty-three patients. A statistically significant increase in E-rosette forming cells was observed in twenty-three patients (69%). Serum blocking factors were not found in the patients with a positive response to TP-I, which suggests the possibility of a thymic hormone deficiency. In the case of non-responders to TP-I, on the other hand, an anti-lymphocyte antibody capable of directly blocking the hormone receptors on the undifferentiated lymphocytes may be postulated.
mesh_terms: D000293:Adolescent; D000328:Adult; D000818:Animals; D002417:Cattle; D005260:Female; D006801:Humans; D007958:Leukocyte Count; D008214:Lymphocytes / Q000187:drug effects*; D008297:Male; D008875:Middle Aged; D011947:Receptors, Antigen, B-Cell / Q000032:analysis; D012397:Rosette Formation; D013601:T-Lymphocytes / Q000187:drug effects / Q000276:immunology; D013949:Thymus Extracts / Q000494:pharmacology*; D014860:Warts / Q000276:immunology*
chemical_list: D011947:Receptors, Antigen, B-Cell; D013949:Thymus Extracts