If the manufacturing process is fixed, why should there be any greater inherent variation for Sanofi than Momenta?
because MNTA's manufacturing process had to result in product that fell within the parameters of that of SNY's (and i am sure they analyzed many batches to establish this range), so it follows that MNTA's manufacturing must result in product with variation no more than that of SNY's, but quite likely less than that of SNY's
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