bacillus anthracis, pathogen. rod-d, gram-positive bacteria. morphology. microbiology.

aerobic anthracis anthrax bacilli bacillus bacteria bacterial bacteriology biological cell cells cereus classification disease endospores fever flat flora form gram illustration infection inflammatory intoxication magnifier malignant medicine microbe microbiology microscope microscopic moniliformis morbific morphology motionless nosogenic organism pathogen pathogenic pathology plague positive rod science shape shaped siberian spore streptobacillus study subtilis type vector