Did you know?🤔Immune #aging: 🔖Begins at 20y and accelerates at 50y 🔖Species-specific 🔖The older immune system is restructured (keep that in mind when diagnosing or treating these pts) 🔖Accelerated w/ chemotx, chronic infection etc. @RheumNow #ACR21 https://t.co/bgbN3VKMCw