definiens: and means allanti - CD19 Antibodies that do not contain any of the Fc variants in Exhibit D ( as is defined in Exhibit D ) and thatboth ( 1 ) ( meaning either of ( a ) or ( b ) ), and ( 2 ): ( 1 ) either of : ( a ) the Fc of such Antibody contains solely a variant listed in Exhibit C ( as is defined inExhibit C ) ; provided, however, that such Antibody is [ … * * * … ] ; or * * * Confidential Treatment Requested 17 ( b ) [ … * * * … ] than [ … * * * … ] and [ … * * * … ] ( i ) such Antibody [ … * * * … ] by [ … * * * … ] compared to [ … * * * … ], [ … * * * … ] compared to [ … * * * … ] ( [ … * * * … ] ) of [ … * * * … ], and [ … * * * … ] that is [ … * * * … ] than [ … * * * … ], and ( ii ) such Antibody does not have [ … * * * … ] that is [ … * * * … ] of [ … * * * … ], and does not have [ … * * * … ] that is [ … * * * … ] AND ( 2 ) [ … * * * … ] ARTICLE 2 COLLABORATION MANAGEMENT AND DEVELOPMENT REPORTING 2.1 Overview