title: Analysis of the intradermal response against a soluble cercarial antigenic preparation from Schistosoma mansoni.
abstract: Intradermal testing was performed with a soluble cercarial antigenic preparation (CAP) from Schistosoma mansoni cercariae in CBA/J mice multiply infected with S. mansoni or sensitized with CAP. Both an early (5-h) response and a late (24- to 48-h) reaction to CAP, as measured by increase in dermal thickness, was elicited after injection of antigen into the ears of either multiply infected (3X-75) or CAP-sensitized (CAP/complete Freund adjuvant [CFA]) mice. Histopathological examination showed that the early response was primarily vascular in nature and involved a polymorphonuclear cell infiltrate in and around dilated capillaries. The late reaction to CAP consisted of a perivascular cellular infiltrate of polymorphonuclear and mononuclear cell types. Passive transfer of 3X-75-infected or CAP/CFA-sensitized serum (0.4 ml) to normal mice conveyed the ability to mount an early (5-h) response to CAP which was marked histopathologically by a prominent polymorphonuclear cell infiltrate. The majority of the responsiveness in normal mice after administration of lymph node cells (40 X 10(6)) from multiply infected or CAP/CFA-sensitized mice was observed 24 to 48 h after injection of CAP and was mononuclear in nature.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000941:Antigens / Q000008:administration & dosage*; D004431:Ear, External / Q000033:anatomy & histology / Q000473:pathology; D007116:Immunization, Passive; D007271:Injections, Intradermal; D007428:Intradermal Tests; D008297:Male; D051379:Mice; D008808:Mice, Inbred CBA; D012550:Schistosoma mansoni / Q000276:immunology*; D012552:Schistosomiasis / Q000276:immunology*; D012882:Skin Tests; D012995:Solubility
chemical_list: D000941:Antigens