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Dennis Conrad

I think that the problem is recognized in general terms. It has always been there, but I see no one focusing on it. As usual the big biotechs probably deal with this stuff at the proprietary level. The smaller biotech's are at the mercy of the industry. They may witness the problems at the product quality level, but they have no mechanism to drive the cell culture industry towards a solution. No one is listening.

Bruce Lehr

Thanks for the comments Dennis. If there was any doubt in the past (there was) as to the relative importance of protein quality issues, I think those will really jump to the fore now between large increases in productivity and the advent of biosimilars. What two factors are going to put spotlight on protein quality any more than those?

Dennis Conrad

Hi Bruce,

I've been saying this for several years. Cell culture needs to understand and focus on the factors that drive product quality. Much is known but much is ignored by the producers of cell culture products. Product quality starts at the upstream level, not the dowsstream level.

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