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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
Which teratogen causes deafness ?
assistant
The correct answer is  Ans. is 'a' i.e., Isotretnoid o Isotretinoin can cause microtia or anotia. o These defects are frequently associated with agenesis or stenosis of external ear canal and may lead to deafness.