Abstract
Hybridoma cell growth and monoclonal antibody production were investigated with a laboratory-made system in which cells were grown in dialysis tubing (MW cut-off 25 kD). The dialysis system contained 10 ml of cell suspension and was immersed in 200 ml of culture medium which when replaced or was at 4-day intervals. With this system, monoclonal antibody concentrations similar to those observed in ascites (concentrations in the order of one gram per liter) were obtained. With no medium replacement, the antibody production was 3.3 g/l and the cell productivity 3.2 x 10(-8) micrograms of IgM produced per cell in one minute. With medium replacement the antibody production was higher, 4.4 g/l but the cell productivity was lower, 1.49 x 10(-8) micrograms per cell in one minute. Cells cultivated in non-optimized conditions were better producers than cells growing in a good environment.
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