| GO term | GO name | GO namespace | GO def |
| GO:0042802 | identical protein binding | molecular_function | Binding to an identical protein or proteins. [GOC:jl] |
| GO:0002250 | adaptive immune response | biological_process | An immune response mediated by cells expressing specific receptors for antigens produced through a somatic diversification process, and allowing for an enhanced secondary response to subsequent exposures to the same antigen (immunological memory). [GO_REF:0000022, GOC:add, ISBN:0781735149] |
| GO:0007155 | cell adhesion | biological_process | The attachment of a cell, either to another cell or to an underlying substrate such as the extracellular matrix, via cell adhesion molecules. [GOC:hb, GOC:pf] |
| GO:0030101 | natural killer cell activation | biological_process | The change in morphology and behavior of a natural killer cell in response to a cytokine, chemokine, cellular ligand, or soluble factor. [GOC:mgi_curators, ISBN:0781735149] |
| GO:0042267 | natural killer cell mediated cytotoxicity | biological_process | The directed killing of a target cell by a natural killer cell through the release of granules containing cytotoxic mediators or through the engagement of death receptors. [GOC:add, GOC:pr] |
| GO:0005886 | plasma membrane | cellular_component | The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. [ISBN:0716731363] |
| GO:0009897 | external side of plasma membrane | cellular_component | The leaflet of the plasma membrane that faces away from the cytoplasm and any proteins embedded or anchored in it or attached to its surface. [GOC:dos, GOC:tb] |
| GO:0042110 | T cell activation | biological_process | The change in morphology and behavior of a mature or immature T cell resulting from exposure to a mitogen, cytokine, chemokine, cellular ligand, or an antigen for which it is specific. [GOC:mgi_curators, ISBN:0781735149] |