Discussion
Medusa head colonies on nutrient agar is seen in:
Answer: D
Correct answer: Anthrax
On nutrient agar, Bacillus anthracis forms large, flat, dull, greyish-white colonies with an irregular edge made up of long parallel chains of bacilli curling outward, giving under low power the appearance of a lock of matted hair - the medusa head. In gelatin stab culture the same growth pattern gives the inverted fir tree appearance. Pneumococcus gives draughtsman colonies, and Legionella and Brucella will not grow on plain nutrient agar at all.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development