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
The most important source of histamine -
assistant
The correct answer is  Ans. is 'a' i.e., Mast cells Mast cells and basophilso Mast cells and basophils are important inflammatory' cells,o They precipitate in both acute & chronic inflammation.o Basophils circulate in the blood, whereas mast cells reside and mature in tissues.o They are the most important cells in immediate hypersensitivity and are also the most important source of histamine.o Other secretions are : Serine proteases, Carboxypeptidases, Giycosidoses, Proteoglycans, Sulfatases.