The circulatory system consists of one heart, five liters of blood, and approximately 96,000 kilometers of blood vessels, responsible for transporting nutrients and waste throughout the body. Water ...

Microbes essential for human health have proven resilient against the extreme forces of space travel, offering hope for ...

Red blood cells carry oxygen from the lungs to every other organ, and blood-forming stem cells must make about 200 billion new red blood cells each day to keep the oxygen flowing. For many years, ...

When biomedical researchers need to test their latest ideas, they often turn to engineered human tissue that mimics the ...

Reduced blood flow can cause unpleasant symptoms, such as pain, muscle cramps, numbness, digestive issues and coldness in the hands or feet. In addition to those with poor circulation, athletes and ...