- toxigenicity test
- (for toxigenic strains of Corynebacterium diphtheriae) a primary culture is streaked onto a plate of tellurite agar containing a strip of filter paper perfused with diphtheria antitoxin. The exotoxin produced by the bacteria forms a band of precipitation with antitoxin diffusing from the filter paper. Called also Elek t.
Medical dictionary. 2011.