1.
A bacterium was isolated from the liver of a turkey that died of septicaemia disease. On the blood agar, the bacterium produced small, -hemolytic colonies. Inoculation of the triple sugar iron (TSI) agar tube resulted in black discoloration along the stab line after incubation for 24 hours. On the basis of these bacteriologic tests, which of the following bacteria would be the first on your list of rule-outs?
2.
The hemagglutination-inhibition test may be used to detect seroconversion to which of the following avian mycoplasmas?
3.
Rodents are an important source of infection of chickens with which of the following Salmonella spp.?