Engineers conceive disc replacement to treat chronic low back pain
The Big 7 Body Breakdowns How to avoid (and recover from) the most common running injuries
An electron microscope catches the immune system blooming into action. A white blood cell (red) wraps itself around a mycobacterium tuberculosis, the causative agent of most cases of tuberculosis. Phagocyte, as a white blood cell is known as, comes from the Greek word phagein (to eat), and that's what the cell does, rendering the infectious cell benign.
There are approximately 100 billion nerve cells in an adult brian. Each of those communicate with as many as 1,000 other nerves throughout the human body. It's the most complex system in the human body and to study it, scientists use a substance that makes the nerve fluoresce in a scan. The researchers then take pictures of the nerves in action.
Martin Oeggerli Fibrin is a protein created by the body that works with platelets in the blood to clot a wound. As they reach the wound site, they attach themselves to fibers, and create a mesh. Working with the platelets, they make a scab that covers the wound until it heals. Though, with the naked eye you would never guess that the process looks like this.
A cross-section of muscle tissue, surrounded by the extracellular tissue that acts as the connective tissue. Each muscle fiber is joined together by the connective tissue to make up the complete muscle. Myasenthia is an neuromuscular disease caused by a faulty relationship between the two.
Anatomy of Sea Life (unscientific diagrams)
Lung alveoli and bronchus. Coloured Scanning Electron Micrograph (SEM) of lung tissue, showing alveoli, a bronchus, and a pulmonary blood vessel. At right is a bronchus (blue), a branching air tube. Beside it is a blood vessel (red) with smooth endothelial surface through which blood passes. Lung tissue (yellow) has a spongy appearance, and is made up of alveoli air sacs whose interstital walls are lined with blood capillaries. Air passes from the bronchus into alveoli where the gases of carbon