The human complement system has a pivotal role in the recognition, opsonization and elimination of microbial intruders. This functionality is maintained by a well-balanced interaction network of serum ...

Explore how ROE and RNOA unlock insights into corporate profitability and managerial efficiency. Learn the differences and improve your financial analysis skills.

Quantum mechanics is weird. When you think you have reached the bottom of its weirdness, you always discover a new ...

Scientists in China have performed an experiment first proposed by Albert Einstein almost a century ago when he sought to ...

The complement cascade is a biochemical process in the blood that helps or 'complements' cells of the immune system to eliminate invading pathogens. When activated by one of three pathways, a cascade ...

Lucas Downey is the co-founder of MoneyFlows, and an Investopedia Academy instructor. Dr. JeFreda R. Brown is a financial consultant, Certified Financial Education Instructor, and researcher who has ...

Foods high in vitamin A include organ meats, sweet potatoes, carrots, eggs, fish, and dairy products. You can also find vitamin A in dietary supplements. Vitamin A plays a role in your vision, bone ...