This is a Notice of Intent for a non-competitive award, and NIH intends to issue a firm-fixed-price award to Epigenetic Clock Development Foundation. The contractor will provide DNA methylation profiling and epigenetic age analysis for 320 previously extracted murine DNA samples. The work will use the Mammal320K methylation array and established Horvath epigenetic clock methodologies. The intended awardee is located in Torrance, CA.