Mastocytosis is a condition affecting mast cells. It can life-threatningly low bood pressure (shock) because of loss from blood vessels . Which of the followning is most likely about mastocytosis?  A, mast cells are overactive and /or overabundant  B, mast cells lack receptors for lgE C, Mast cells are deficient and/or underactive  D, People with mastocytosis do not experience swelling

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