Which of the following is true regarding anthrax
M' Fadyean reaction shows capsule
Human are usually resistant to infection
Less than 100 spores can cause pulmonary infection
Gram stain shows organism with bulging spores
M' Fadyean's reaction: When blood films containing anthrax bacilli are stained with polychrome methylene blue for a few seconds and examined under a Microscope, amorphous purplish material is noticed around the bacilli. This represents the capsular material and is characteristic of the anthrax bacilli. Reference: Textbook of Microbiology; Anathanarayan and panicker's; 10th edition; Page no: 251
Bacteriology