definiens: shall mean any project s, activities, biological materials ( including Biological Targets ), Know - How ( including Materials and Research Technology ), IPR and other subject matter the use o f which can result inthe modulation of the activity of isolated NK cells ( fo r example resulting in the modulation of the production of cytokine or in the modulation of any biological ( including any cell - regulatory ) activity of NK cell s ), as observable in a bioassay comprising only purified NK cells or NK cell lines, with or 4 without any target cells, such modulation being tri ggered by the binding of any ligand or molecule to any of the cell surface recep tors expressed on NK cells or to any of their ligands . These include, but are not li mited to : * * * ( f ) the NK cell surface receptors and ligands there of identified as Collaboration Targets, including but not limited to those listed in Schedule 1.1.11 ; 1.1.12 or 1.1.13, as well as other potential targets discovered dur ing the course of the Collaboration, inc luding new NK cell surface receptors and ligands th ereof ; and the use of any of the foregoing ( in each cas e ( a ) through ( f ) ), for any purpose, including any prophylactic, diagnostic or therapeut ic use or purpose