Replicative aging of Saccharomyces cerevisiae is an established model system for eukaryotic cellular aging. A limitation in yeast lifespan studies has been the difficulty of separating old cells from young cells in large quantities. We engineered a new platform. the Miniature-chemostat Aging Device (MAD). https://www.bekindtopets.com/special-deal-NFL-Cincinnati-Bengals-Zone-Block-Cochlear-Nucleus-6-Skin-p20556-special-save/