"Once damaged, these hairs never grow back. You have around 3,500, and that is all you'll have throughout your entire life...

A computer-generated image of red blood cells. Nitric oxide—known by the formula NO—is so vital for humans’ internal physiological processes that it was crowned Molecule of the Year in 1992. It plays ...

Not all organs are needed for survival. From your gallbladder to your spleen, here are 12 organs you can lose and still ...

In many cells of the human body, hair-like protrusions known as cilia act as antennae, allowing cells to receive signals from ...

In his latest book, the oncologist and acclaimed writer Siddhartha Mukherjee focus his narrative microscope on the cell, the elementary building block from which complex systems and life itself emerge ...

An organ is a group of tissues that work together to perform a specific task in the body, such as digesting nutrients or producing chemical messengers that enable brain cells to communicate. Although ...

We all know there's a heart in the body; we've been reading about it since childhood. As long as it beats, humans live. Let's ...

Please provide your email address to receive an email when new articles are posted on . A gene-edited pig kidney transplanted into a brain-dead man’s body is functioning well more than 4 weeks later.

Renin-angiotensin system, or RAS, is a physiological mechanism essential to human body function. The SARS-CoV-2 virus causes overactivation and malfunction of this system. The RAS regulates innate ...