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Here, we depict a mast cell (MC) activated by IgE binding the receptor FcεRI, leading a biochemical cascade which results in the transcription and the generation of inflammatory cytokines (panel a). Here, we show two MCs magnified 100× with light microscopy (panel b), and a MC at electron microscopy, with granules and regular cytoplasm (magnified 30,000×) (panel c).
