Does "scalable" mean "being in stable development"?
Context:
"Taken together, these two studies suggest that
the new scalable vaccine formulation is likely to prove as effective as the original formulation -- which would make it the first protective TB vaccine in humans since BCG, which was introduced almost a century ago," said Professor Ajit Lalvani, Director of the Tuberculosis Research Centre, National Heart and Lung Institute, Imperial College London and a member of the DAR-901 development team.
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