2. ObjectiveTo improve maximum cell-density andantibody production of the two NSOcell lines by culture mode andsuppression of apoptosis. 3. System under analysis:. Two NSO cell lines-6A1 bcl-26A1 (100)3producing chimeric cB72.3 IgG MAb forcancer therapy. 4. Culture Mode. FED-BATCHCharacterized bypredetermined or controlled addition ofnutrient medium in anotherwise batch culture (no withdrawal of culture).