The team, led by biomedical engineer Michael E. Davis, found that injecting animal hearts with microparticles formulated with the polymer PCADK—poly(cyclohexane-1,4-diylacetone dimethylene ketone)—improved cardiac function after simulated heart attack. Unlike other “carrier” molecules, PCADK degrades into two benign substances: 1,4-cyclohexanedimethanol, an FDA-approved food additive, and acetone, an endogenous compound.
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