Changes

*Motile

*Motile

*Catalase positive, oxidase negative

*Catalase positive, oxidase negative

*''Bacillus anthracis'' colonies are up to 5mm diameter, flat, dry, grey, with a ground-glass appearance; curled outgrowth sfrom the edge of the colony give a 'medusa head' appearance; non-haemolytic (differentiate from ''Bacillus cereus'')

*''Bacillus anthracis'' colonies are up to 5mm diameter, flat, dry, grey, with a ground-glass appearance; curled outgrowths from the edge of the colony give a 'medusa head' appearance; non-haemolytic (differentiate from ''Bacillus cereus'')

*''Bacillus licheniformis'' forms dull, rough, wrinkled colonies, with hair-like outgrowths

*''Bacillus licheniformis'' forms dull, rough, wrinkled colonies, with hair-like outgrowths

*Biochemical tests for identification

*Biochemical tests for identification

*Can often tolerate adverse environmental conditions

*Can often tolerate adverse environmental conditions

===''Bacillus anthracis''===

===''Bacillus anthracis''===