definiens: shall mean : ( i ) [ four ( 4 ) ] Hollow - Fiber Bioreactor Runs, for convenience labeled runs [ A, B, C & D ], with the runs being done [ in pairs ], such that [ A & B ] would be staggered approximately [ a week ] or less apart, and [ C & D ] would be similarly time - staggered ; ( ii ) [ two ] purifications, each of the combination of [ two ( A+B or C+D ) ] of the [ four ] Hollow - Fiber Bioreactor Runs, to generate CYT-351 ; ( iii ) a total of [ four ( 4 ) ] conjugations of the CYT-351 to generate [ four ] Lots ofCYT-356 . Only [ two ] conjugations would be carried out in this initial campaign . The remaining CYT -351 shall be stored by Laureate up to [ three ( 3 ) years ] or until [COMPANY] requests that this remaining CYT -351 be conjugated ; ( iv ) a total of [ four ( 4 ) ] lots of conjugated antibody in vials, approximately [ 6,500 ] vials per lot ; and ( v ) [ four ( 4 ) ] sodium acetate fills, each fill utilizing a volume of sodium acetate buffer solution as specified in the Batch Record including all Services required to supply [COMPANY] with Filled Sodium Acetate Product . ( t ) means the compound capromab pendetide formulated by conjugating the murine monoclonal antibody CYT -351 to the linker - chelator ( glycl - tyrosyl-(N - diethyltriaminepentaacetic acid)-Iysine hydrochloride ] ( CYT -063 )