Research Article

Cigarette Smoke Suppresses the Surface Expression of c-kit and FcεRI on Mast Cells

Figure 3

Long-term exposure of mast cells to CSM inhibits allergic degranulation. BMMCs were cultured in regular culture medium, in the presence of CSM (1.5%) or LPS (100 ng/mL) in the third week of bone marrow culture. Then, cells were sensitized with DNP-specific IgE, followed by activation with dinitrophenyl-conjugated human ovalbumin (DNP-Ova). Degranulation was assessed by the release of -hexosaminidase in the supernatants from cells. Data are mean ± SEM of quadruplicate samples ( ).
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