"A type of vesicle-mediated transport in which cells take up external materials or membrane constituents by the invagination of small region of the plasma membrane to form a new membrane-bounded vesicle [goid 6897] [evidence IEA]; Any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat [goid 6955] [evidence IEA]; 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 attachment of an adhesion molecule in one cell to a nonidentical adhesion molecule in an adjacent cell [goid 7157] [pmid 1518869] [evidence TAS]; The attachment of a leukocyte to another cell via adhesion molecules [goid 7159] [pmid 11337487] [evidence NAS]; A series of reactions within the cell that occur as a result of a single trigger reaction or compound [goid 7242] [pmid 11337487] [evidence NAS]; The set of specific processes that generate the ability of an organism to cause disease in another [goid 9405] [pmid 11337487] [evidence NAS]; Cell recognition between cells, usually involving the formation of specialized cell junctions [goid 9988] [pmid 11337487] [evidence TAS]; Interactions, directly with the host cell macromolecular machinery, to allow virus replication [goid 19048] [pmid 11337487] [evidence TAS]; Any process involved in the specific binding of a viral antireceptor to a cell surface receptor [goid 19062] [pmid 11337487] [evidence TAS]; Any process involved directly in viral genome replication, including viral nucleotide metabolism [goid 19079] [pmid 11337487] [evidence NAS]; The process by which an antigen-presenting cell expresses antigen (peptide or lipid) on its cell surface in association with an MHC protein complex [goid 19882] [pmid 11337487] [evidence NAS]; Any process by which an organism has an effect on an organism of a different species [goid 44419] [evidence IEA]; The directed movement of a virion within a host cell from one location to another [goid 46795] [pmid 11337487] [evidence TAS]; The directed movement of a peptide antigen into, out of, within or between cells. The peptide antigen is typically, but not always, processed from an endogenous or exogenous protein [goid 46968] [pmid 11337487] [evidence NAS]"