NEET PG DENTAL EXAM

Detailed explanation-1: -Mast cells are very similar to basophil granulocytes (a class of white blood cells) in blood. Both are granulated cells that contain histamine and heparin, an anticoagulant. Their nuclei differ in that the basophil nucleus is lobated while the mast cell nucleus is round.

Detailed explanation-2: -Mast cells are tissue resident cells and uniquely required for immediate hypersensitivity. Basophils are largely circulating cells, but home to areas of allergic inflammation during the late phase response. Eosinophils are resident to the GI tract, but also home to allergic inflammatory sites.

Detailed explanation-3: -While both cell types share the ability to rapidly degranulate and release histamine following high-affinity IgE receptor cross-linking, they differ markedly in their ability to either react to other stimuli, generate inflammatory eicosanoids or release immunomodulating cytokines and chemokines.

Detailed explanation-4: -Under normal physiological conditions, the common basophil-mast cell progenitors differentiate into either basophils or mast cells and not into mixed lineage cells that display both sets of characteristics.