Fig. 7: Salivary glands, which regulate the absorption of Vitamin B12, are critical for centenarians.
From: PTP-3 regulated by VB12 is important for ageing health in C. elegans

Expression sites of TCN1 (A), TCN2 (B), FUT2 (C), and CUBN (D) in humans and at different ages. E PTPRS decreases with age in mouse astrocytes. F Centenarians had significantly increased levels of TCN1, TCN2, CUBN, and PTPRS.