Alveoli are the basic functional units of the human respiratory system, acting as tiny air sacs that exchange gases. Air inhaled through the mouth and nose flows into the lungs through the branched ...

What if scientists could build a realistic model of the human lung, not full-sized, but grown in the lab from living cells?

Most of us breathe thousands of times a day without noticing, but a growing body of research says those breaths might hold ...

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 ...