Every cell depends on proteins to function and stay healthy. These proteins are made inside the cell from amino acids, but ...

Scientists have developed an experimental way to study how human embryos implant in a uterus, which may provide new insights into why miscarriages occur and how they can be prevented.

At first glance, it looks like the start of a human pregnancy: A ball-shaped embryo presses gently into the receptive lining ...

The magnetic compass is the last unknown sense in migrating animals. For some scientists, the monarch butterfly is leading ...

Opioid receptors are a subset of G protein–coupled receptors (GPCRs). These membrane proteins transmit signals into the cell ...

Redd’s daily treatment reveals how orangutans with chronic respiratory diseases are adapting to use certain medical tools ...