The Power of Immune System Memory Cells

Memory cells allow for a faster and more effective response upon future exposure to the same pathogen.

Memory cells are replenished by cytokines IL-7 and IL-15, although most memory cells are not actively dividing.

Smallpox vaccination induces long-lasting memory cells that can last for decades, allowing the immune system to produce a robust response even in the absence of new infections.

<p>Memory cells created during initial exposure persist until second encounter with pathogen.</p> Signup and view all the answers

<p>IL-7 and IL-15.</p> Signup and view all the answers

<p>8-15 years.</p> Signup and view all the answers