Complement component 3, often called C3, is an essential protein of the immune system. This protein plays a vital role in the body’s innate immune system, providing the first line of defense against ...

A complement blood test measures how well complement proteins in your blood support immune defense. The complement system helps antibodies fight germs and clear foreign substances. Complement testing ...

A complement C4 (also known as a complement component 4, or simply C4) is a test to measure the level of C4 proteins you have in your blood. These proteins play a role in how your immune system ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. When it comes to giving negative feedback at work, the so-called ...

Among people with sickle cell disease—an inherited blood disorder—acute chest syndrome (ACS) is the leading cause of death. The condition is the result of red blood cells becoming stiff, sticky, and ...

In myasthenia gravis, complement plays a big role in what happens to the muscle end of the neuromuscular junction, explains Miriam Freimer, MD, an author on 5 abstracts presented at the recent 15th ...

Immunotherapy is increasingly becoming standard therapy in cancer, with technology, such as checkpoint inhibitors and cell therapy, raising the efficacy bar in many forms of the disease. But the ...

Someone pays us a compliment and we deflect or minimize the kind words, as if doing so will make us seem humble or at least not look arrogant. Many of us struggle with this issue. Someone pays us a ...

Add Yahoo as a preferred source to see more of our stories on Google. When it comes to the English language, I'm confident no one meant to confuse us. There wasn't a panel of mean English teachers who ...

When it comes to the English language, I'm confident no one meant to confuse us. There wasn't a panel of mean English teachers who sat around a table, finding ways to ...

A few weeks ago, I wrote about how to give and take criticism well. As important as that is for getting along with others, one skill does supersede it: the ability to give compliments. The quality of ...