GO:0045576

mast cell activation

Details: 
The change in morphology and behavior of a mast cell resulting from exposure to a cytokine, chemokine, soluble factor, or to (at least in mammals) an antigen which the mast cell has specifically bound via IgE bound to Fc-epsilonRI receptors. [GOC:mgi_curators, ISBN:0781735149]
Evidence Code: