Real-Time Activation of One Mast Cell - NEJM video

Real-Time Activation of a Mast Cell by Substance P: Photomicroscopy of one human mast cell placed between two cover slips and perfused with the neuropeptide substance P shows degranulation in real time as observed with the use of Nomarski (three-dimensional) optics.

See the related NEJM article, "Mast Cells, Mastocytosis, and Related Disorders" http://www.nejm.org/doi/full/10.1056/NEJMra1409760