Abstract
A quadroma (#22 × 63), formed by the fusion of two hybridomas, and its parent hybridomas (#22 and FMC 63) were each grown in fed batch cultures in order to examine the change in antibody productivity over time of the quadroma compared to its parent hybridomas. The growth rate, glucose uptake rate and lactate production rate of the quadroma were found to be intermediate between those of its parent cells of origin. The specific antibody productivity and internal antibody content of the quadroma followed the same decreasing trends over time as those seen in both parent hybridomas. Losses in specific antibody production rate and antibody content, however, occurred at a faster rate for the quadroma than for either of its parent hybridomas. Although the growth of a non-producing subpopulation is presumed to account for the drop in antibody production, there was no direct correlation between the percentage of high antibody containing cells, as determined by flow cytometry, and the specific antibody production rate.
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