<prompt> Bacillus Anthrax is:Gram positive cocci in clusterGram positive rods with square endsGram positive bacili with spherical endsGram negative cocci in cluster  <response>: Gram Positive bacilli Bacillus Anthrax. Gram positive rods with square ends non bulging spore bulging spore seen in cl. tetani GPB, Non Motile, capsulated. Mc fadyeans reaction M - Mcfadyean reaction Medusa Head appearance I - Inveed fir tree appearance S - String of pearl reaction Bamboo - Bamboo stick appearance on Gram stain 