<prompt> Culture medium for Corynebacterium diphtheria isLoefflers serum slopeMcConkeys agarSabourauds agarLowenstein Jensen medium  <response>: Loefflers serum slope: diphtheria bacilli grow on this media very rapidly and colonies can be seen in 6-8 hours, long before other bacteria grow. Colonies are the first small, circular white opaque disc but enlarge on continued incubation and may acquire a distinctly yellow tint. Reference: Textbook of Microbiology; Anathanarayan and panickers; 10th edition; Page no: 242 