As our virtual heart tour continues, we gather around a bisected heart, watching valves open and close. The teacher prompts ...

Circulate Health, a Seattle health longevity startup, today announced $12 million in seed funding to expand its plasma ...

Even after decades of research, biologists are still uncovering surprises about the human body. A team of researchers from ...

From the beginning of your life to the very end, your blood never stops traversing about 60,000 miles (100,000 km) of blood ...

Scientists say they captured 3D images of a new organelle they're calling a "hemifusome," which may be a recycling center in ...