Oncogenic mutations of Ras, which are found in human tumours, tumour cell lines and in carcinogen-induced experimental tumours, cause the hyper-activation of the Ras proteins. Ras proteins are GTPases ...

The 2025 Nobel Prize in Physiology or Medicine has been awarded jointly to Mary E. Brunkow, Fred Ramsdell and Shimon Sakaguchi “for their discoveries concerning peripheral immune tolerance”. Immune ...

All times ET. Not all candidates are listed. CNN will broadcast a projected winner only after an extensive review of data from a number of sources. "Flipped seat" denotes a race where the 2020 ...

Implantation bleeding is light bleeding from the vagina that happens in some people 10-14 days after they conceive a baby. You may think it’s just a light period, but it can be an early sign of ...

If dark skin spots due to hyperpigmentation bother you, one thing is clear: Today, more options are available for erasing that harmless but irksome discoloration than ever before. Hyperpigmentation ...

Note: The U.S. Food and Drug Administration (FDA) does not approve supplements for safety or effectiveness. Talk to a healthcare professional about whether a supplement is the right fit for your ...

A single tick bite can trigger a bizarre meat allergy—here’s how alpha-gal syndrome is reshaping people’s diets.