definiens: means ( a ) for [ * * ] or [ * * ], the activities performed or to be performed byCELGENE, its Affiliates and Sublicensees under the applicable Development Plan, to Develop Licensed Compoundsand Licensed Products Directed to such Target after such Target becomes a Selected Target, and related DiagnosticProducts, in the Field during the applicable Development Term, ( b ) the activities performed or to be performed byCELGENE, its Affiliates and Sublicensees to Develop Licensed Compounds and Licensed Products Directed to anAvailable Target that becomes a Selected Target pursuant to Sections 2.4 or 2.5, or ( c ) a Shared DevelopmentProgram as to which EPIZYME exercises an EPIZYME Post - EOP1 Clinical Opt - Out pursuant to Section 2.5 or anEPIZYME Late Stage Opt - Out pursuant to Section 2.6