system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Operation theatres are sterilized by?
assistant
The correct answer is  FORMALDEHYDE GAS is used for sterilizing instruments and heat sensitive catheters and for fumigating wards, sick rooms, and laboratories REF:Ananthanarayan and Panicker's Textbook ofMicrobiology 8thEdition pg no:36