When a virus enters the lungs, the immune system has to react fast. The lung maintains its own community of immune cells ...

During the recent Covid-19 pandemic, the rate of serious illness and death was jarringly high in older populations. Why? Weakening immune systems — as we age, we become more vulnerable to infections, ...

Antibodies, which recognize viruses and proteins that the body has encountered before, have long gotten most of the credit for giving the human immune system a memory. Now, researchers at the ...

Gut bacteria aren’t just passive passengers—they can actively send proteins straight into our cells. Using microscopic injection systems, even harmless microbes can influence immune responses and ...

It’s 2024—we know that cigarettes are bad for you. But scientists are still uncovering new and troubling ways that smoking changes you from the inside out. Today in Nature, a new study from the ...

Stem-cell researcher Carolina Florian didn’t trust what she was seeing. Her elderly laboratory mice were starting to look younger. They were more sprightly and their coats were sleeker. Yet all she ...

A healthy immune system is one of the keys to a healthy life. It’s what protects your body from infection. If your immune ...

If the COVID-19 pandemic has done one thing, it’s made us all more familiar with some of the important players in the immune system. Antibodies, B cells, and T cells are among the best known parts of ...

We are in the thick of cold and flu season. So, fortifying your immune system is probably high on your list of priorities. While there is no magical food or supplement that will prevent you from ...

Your immune system is like an incredibly sophisticated security team, constantly patrolling your body for threats and neutralizing them before they can cause harm. When it’s working properly, this ...