definiens: means each of, and means, collectively, ( a ) EUSA, ( b ) EUSA Pharma ( USA ), Inc., ( c ) EUSAPharma ( Holdings ), Inc., ( d ) EUSA Pharma Limited, ( e ) Prostagen Inc., ( f ) AxCell Biosciences Corporation, ( g ) CytogenAcquisition Corp., ( h ) EUSA Pharma ( Gibraltar ) Limited, ( i ) EUSA Pharma ( Luxembourg ) S.à r.l . ( including its branch office inthe United Kingdom ), ( j ) EUSA Pharma Holdings SAS, ( k ) EUSA Pharma ( Europe ) Limited, ( l ) EUSA Pharma B.V., ( m ) EUSAPharma GmbH, ( n ) EUSA Pharma SAS, ( o ) Orphan 3Pharma International Limited, ( p ) EUSA Pharma ( Canada ) Inc., ( q ) OPiSodia SAS, ( r ) EUSA Pharma ( Europe ) UK Limited and(s ) EUSA Pharma ( UK ) Limited