Any process involved in the development or functioning of the immune system, an organismal system for calibrated responses to potential internal or invasive threats. [ http://purl.obolibrary.org/obo/go/references/0000022 GOC:add ]
Term information
goslim_chembl, goslim_generic, goslim_flybase_ribbon, goslim_pir, goslim_agr, goslim_mouse
Note that this term is a direct child of 'biological_process ; GO:0008150' because some immune system processes are types of cellular process (GO:0009987), whereas others are types of multicellular organism process (GO:0032501).