Opacity around colonies of clostridium perfringens is due to
Correct Answer: Lecithinase
Description: Alpha toxin is produced by all thoracic clostridium perfringes. Alpha toxin is lecithinase C. Demonstrated by Nagler's reaction. Nagler reaction; When Clostridium perfringes are grown in media containing 6 % agar, Fildes peptic digest of sheep blood and 20% human serum, with antitoxin spread on one half of plate, colonies in the other half without antitoxin will be surrounded by a zone of opacity. No opacity around the colonies on the half of plate with antitoxin. This is due to the specific neutralization of the alpha-toxin or lecithinase C. Reference: Textbook of Microbiology; Anathanarayan and paniker's; 10th edition; Page no: 259
Category:
Microbiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now