The attachment of a cell, either to another cell or to an underlying substrate such as the extracellular matrix, via cell adhesion molecules [goid 7155] [evidence IEA]; The binding of a cell to the extracellular matrix via adhesion molecules [goid 7160] [evidence IEA]; Any series of molecular signals generated as a consequence of an integrin binding to one of its physiological ligands [goid 7229] [evidence IEA]; A form of programmed cell death induced by external or internal signals that trigger the activity of proteolytic caspases, whose actions dismantle the cell and result in cell death. Apoptosis begins internally with condensation and subsequent fragmentation of the cell nucleus (blebbing) while the plasma membrane remains intact. Other characteristics of apoptosis include DNA fragmentation and the exposure of phosphatidyl serine on the cell surface [goid 6915] [pmid 12885943] [evidence NAS]; The immediate defensive reaction (by vertebrate tissue) to infection or injury caused by chemical or physical agents. The process is characterized by local vasodilation, extravasation of plasma into intercellular spaces and accumulation of white blood cells and macrophages [goid 6954] [pmid 12885943] [evidence NAS]; The attachment of a cell, either to another cell or to an underlying substrate such as the extracellular matrix, via cell adhesion molecules [goid 7155] [pmid 1694220] [evidence TAS]; The attachment of a leukocyte to another cell via adhesion molecules [goid 7159] [pmid 12885943] [evidence IDA]; The binding of a cell to the extracellular matrix via adhesion molecules [goid 7160] [evidence IEA]; Any series of molecular signals generated as a consequence of an integrin binding to one of its physiological ligands [goid 7229] [pmid 12885943] [evidence NAS]; Any process that mediates the transfer of information from one cell to another [goid 7267] [pmid 12885943] [evidence NAS]; Any process that modulates the surface configuration of a cell [goid 8360] [pmid 12885943] [evidence NAS]; The directed movement of a neutrophil cell, the most numerous polymorphonuclear leukocyte found in the blood, in response to an external stimulus, usually an infection or wounding [goid 30593] [pmid 12885943] [evidence IDA]; The migration of leukocytes from the blood vessels into the surrounding tissue [goid 45123] [evidence IEA]; Any process that modulates the frequency, rate or extent of the phosphorylation of peptidyl-tyrosine [goid 50730] [pmid 12885943] [evidence IDA]; The expansion of a T cell population following activation by an antigenic stimulus [goid 50798] [evidence IEA]