The follicle proper has met the end of its lifespan.

This equipment has now reached the end of its lifespan.

Towards the end of its lifespan the subjects taught at the school were:

The Pohjanmaa is over 30 years old and, despite modernizations, will soon reach the end of her lifespan.

In fact, it's common for a clutch to be replaced before a car reaches the end of its lifespan.

While the cars have reached the end of their useful lifespan, the authority is overhauling them to save money.

This is especially significant in enterocytes which are shed at the end of their lifespan.

These tenants have all said that the Dome is nearing the end of its useful lifespan.

But again, they are mortal so they would, at the end of their lifespan, die.

At the end of their lifespan, they become senescent, and are removed from circulation.