The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Breakdown of periodontal fibres in periodontitis is due to bacterial enzyme: (OR) Which of the following bacterial products have been implicated in initiation of inflammatory periodontal disease?   (A) Collagenase   (B) Hyaluronidase   (C) Coagulase   (D) None of the above
['(A) Collagenase <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Collagenase \n (B) Hyaluronidase \n (C) Coagulase \n (D) None of the above <> possible answers', '  Breakdown of periodontal fibres in periodontitis is due to bacterial enzyme: (OR) Which of the following bacterial products have been implicated in initiation of inflammatory periodontal disease? <> context@']