In vitro studies of group E streptococci in swine leukocytes. 3. The migration inhibition test as an indication of delayed hypersensitivity in streptococcic lymphadenitis.
A procedure for conducting tests for leukocyte migration inhibition was developed for swine leukocytes. Leukocytes from normal swine were found to be inhibited by a factor of less than 20% in the presence of the whole cell antigen of group E Streptococci (GES). However, the migration of leukocytes from swine which had been exposed to GES was inhibited by more than 60% in the presence of the antigen. This was considered as significant and an indication for the presence of delayed hypersensitivity to GES in previously exposed swine.
D000818:Animals; D000941:Antigens; D002464:Cell Migration Inhibition; D006968:Hypersensitivity, Delayed; D007962:Leukocytes / Q000276:immunology*; D008199:Lymphadenitis / Q000662:veterinary; D013290:Streptococcal Infections / Q000662:veterinary; D013291:Streptococcus / Q000276:immunology; D013552:Swine; D013997:Time Factors
D000941:Antigens