||All are non-motile.
||Generally, are motile.
||Presence of capsule.
||Absence of capsule.
||Growth occurs in long chain form.
||Growth occurs in short chain form.
||Medusa head colony in nutrient agar.
||Medusa head colony absent.
||Growth in penicillin agar is not found.
||Usually growth in penicillin agar found.
||Very weak or absence of hemolysis.
||Well marked hemolysis usually.
||Inverted fir tree growth and gelatin liquefaction is slow.
||Gelatin liquefaction occurs rapidly.
||In broth, turbidity is not noticed.
||In broth, turbidity is noticed usually.
||Gives negative salicin fermentation test.
||Gives positive salicin fermentation test.
||Growth at 450 C not found.
||Growth usually found at 450 C.
||Chloral hydrate inhibits the growth.
||Chloral hydrate does not inhibit the growth.
||Susceptible towards gamma phase.
||No susceptibility found towards gamma phase.
||Laboratory animals are affected i.e., pathogenic in nature.
||Laboratory animals are not affected i.e., non-pathogenic.
||Gives positive ascoli’s precipitin test.
||Gives negative ascoli’s precipitin test.
||Gives positive fluorescent antibody test with anthrax antiserum.
||Gives negative fluorescent antibody test with anthrax antiserum.
||Very weak lecithinase activity in egg yolk agar.
||Marked lecithinase activity in egg yolk agar.
||Spores are central and do not bulge out.
||Spores are central, sub-terminal or terminal, may bulge out.
Image source: microbiologynote
Differences between Anthrax bacilli and Anthracoid bacilli