has part has part lacks_plasma_membrane_part has plasma membrane part develops from capable of has high plasma membrane amount mast cell FMA:66784 A cell that is found in almost all tissues containing numerous basophilic granules and capable of releasing large amounts of histamine and heparin upon activation. Progenitors leave bone marrow and mature in connective and mucosal tissue. Mature mast cells are found in all tissues, except the bloodstream. Their phenotype is CD117-high, CD123-negative, CD193-positive, CD200R3-positive, and FceRI-high. Stem-cell factor (KIT-ligand; SCF) is the main controlling signal of their survival and development. BTO:0000830 histaminocyte labrocyte mastocyte CALOHA:TS-0603 tissue basophil Mast cells are generally integrin beta-7-negative and positive for TLR2, TLR3, TLR4, TLR5, TLR7, TLR9, C3aR, C5aR, CR3, CR4, VEGF, FGF2, and renin. They can express MHC Class I and II on their surface. Activated murine mast cells (IgE+Antigen) were capable of expressing the following co-stimulatory molecules: CD95 (Fas), CD120b, CD137 (4-1BB), CD153 (CD30L), CD154 (CD40L), GITR, ICOSL, OX40L, PD-L1, and PD-L2. Note that there was some mouse strain variation. Mast cells have also been demonstrated to produce bFGF, CCL2, CCL4, CCL5, CCL11, CCL20, CXCL2, CXCL8, CXCL10, GM-CSF, IFN-gamma, IL-1, IL-2, IL-3, IL-8, IL-10, IL-11, IL-12, IL-13, IL-16, IL-25, IL-18, MIP-1, prostaglandin D2, SCF, TGF-beta, TNF-alpha, TSLP, VEGF, and XCL1. They express the transcription factors Transcription factors AP-1, GATA1, MITF, Notch2, PIAS3, PU.1, and STAT5. myeloid leukocyte mast cell progenitor histamine secreting cell histamine production involved in inflammatory response prostaglandin production involved in inflammatory response positive regulation of peripheral tolerance induction positive regulation of leukocyte chemotaxis positive regulation of type 2 immune response secretory granule heparin proteoglycan biosynthetic process C-C chemokine receptor type 3 interleukin-3 receptor class 2 alpha chain mast/stem cell growth factor receptor cell surface glycoprotein CD200 receptor 3 high affinity immunoglobulin epsilon receptor subunit alpha