– GRAM-NEGATIVE RODS
– NON-MOTILE
– NON-SPOREFORMING
– CATALASE: POSITIVE
– OXIDASE : POSITIVE
– FACULTATIVE ANAEROBIC
BASIC TESTS FOR IDENTIFICATION:
- requirement of X+V factor in cultivation media
- X = hematin
- V = nicotinamide adenine dinucleotide(NAD)
- growth on chocolate agar but not on blood agar