Bacillus pumilus is a Gram-positive, aerobic, spore-forming bacillus commonly found in soil. Anthrax is an infection caused by the bacterium "Bacillus anthracis". Anthrax is an acute disease caused by the bacterium "Bacillus anthracis". A bacillus (plural bacilli), or bacilliform bacterium, is a rod-shaped bacterium or archaeon. A bacillus (plural bacilli) is a rod-shaped bacterium. It is a bacterium of the spore-forming genus Bacillus. Endospores of the bacterium "Bacillus anthracis" were used in the 2001 anthrax attacks. Careful formulations of the bacterium "Bacillus thuringiensis" are more effective. Bacillus mycoides is a bacterium of the genus "Bacillus". The main cause of TB is "Mycobacterium tuberculosis" (MTB), a small, aerobic, nonmotile bacillus. Also interesting is the effect of alpha-defensins on the exotoxin produced by anthrax ("Bacillus anthracis"). Tuberculin is a glycerol extract of the tubercle bacillus. Eikenella corrodens is a fastidious Gram-negative facultative anaerobic bacillus. Their work included subculturing virulent strains of the tuberculosis bacillus and testing different culture media. Bacillus firmus is a species of bacteria within the genus "Bacillus".