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Question
Histamines are released from ______.
Options
macrophages
T lymphocytes
mast cells
natural killer cells
MCQ
Fill in the Blanks
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Solution
Histamines are released from mast cells.
Explanation:
During an allergic reaction, mast cells release histamines, which cause effects such as capillary dilation and itching. The other listed cells are not the principal source of histamine.
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