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The body's immune system is like any other system of the body. Each of them have their vital function for the human host.

The immune system has evolved the capacity to react specifically with a very large number of foreign molecules with which it had no previous contact while avoiding reactivity for autologous molecules, naturally antigenic in other species or in other individuals of the same species.

The immune system constantly creates genes on the fly that are specific to the things that show up in the body. It's amazing.

Investigating rare diseases gives researchers more clues about how the healthy immune system functions.

If we think of the immune system as a machine, then we are far from even knowing all of its parts.

When you vaccinate someone, or when you get infected, the microbe is presenting itself to the immune system in a way that the immune system recognizes the important elements of the microbe and makes an immune response, both an antibody response and a cellular response, to ultimately contain the microbe.

There's a cultural expectation that everyone will be immunized, in part to protect the entire population. When people refuse that expectation, they're indulging in a certain kind of political or social immunity.

As biologists, we contemplate with admiration and awe the wondrous array of sophisticated cell interactions and recognitions evolved in the T cell immune system, which must be a model for other similarly complex biological systems of highly differentiated organisms.

To manipulate the immune system, you need to find the key bottlenecks that govern the system. The T-cell is an absolute bottleneck.

That is why it is so important not only to have excellent treatment but also to try to get back the immune defense, because there you have a natural defense that takes place everywhere.