0 comments on “The ‘Graying’ of T Cells – Immune fitness is twofold: attacking illness-causing cells like bacteria, viruses and cancer and “remembering” past invaders”

The ‘Graying’ of T Cells – Immune fitness is twofold: attacking illness-causing cells like bacteria, viruses and cancer and “remembering” past invaders

The elderly suffer more serious complications from infections and benefit less from vaccines.

In a healthy person, T cells circulate in the blood and quietly scan the body for threats using proteins on the cell’s surface. If a T cell encounters another cell it deems dangerous, the T cell undergoes activation, a molecular cascade in which it switches from surveillance mode to attack mode. The activated cells then rapidly replicate to build an army and destroy the enemy.

Source: The ‘Graying’ of T Cells | Harvard Medical School

0 comments on “TURN IT DOWN: The WHO is urging manufacturers and regulators to ensure smartphones and other audio players have software that can ensure people do not listen to too loud music for too long!”

TURN IT DOWN: The WHO is urging manufacturers and regulators to ensure smartphones and other audio players have software that can ensure people do not listen to too loud music for too long!

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