Which of the following is true regarding anthrax?
Ans. is 'a' i.e., McFadyean reaction shows capsuleHumans are usually resistant to infection and Sputum microscopy helps in diagnosis in case of pulmonary anthrax.Stained smears from the local lesion or of blood from clinical samples of human or dead animals often show chains of large gram-positive rods (spores are not in clinical samples). Anthrax can be identified in dried smears by direct immunofluorescence staining techniques.
McFadyean reaction shows capsule
Humans are usually resistant to infection
Less than 100 spores can cause pulmonary infection
Gram stain shows organism with bulging spores
Bacteria