http://ch.pipingrock.com/igf-deer-antler-velvet/igf-deer-antler-velvet-spray-extra-strength-7060?prisp=1 Day 259 has 58 protein-coding genes (browser view) including IGF-1 (insulin-like growth factor 1).
IGF-1 stimulates growth during puberty and throughout life. A related gene in worms is associated with aging and lifespan, but the relevance to humans is debated.
Click here to see all 8329706 letters of Day 259 with IGF1 underlined.