Cellular Basics

Prokaryotic and Eukaryotic Cells

What are T cells?

Everyone should thank their T (and B) cells—the cells that keep many bacteria and viruses at bay. T cells are produced in the bone marrow; they later move to the thymus (where they mature) and are divided into two types:

Thus, along with B cells called memory cells (see below), the T cells can keep the intruding antigen from invading the body—and both in tandem help the immune system to activate much faster.


This is a web preview of the "The Handy Biology Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App