Polarized Light Microscopy Digital Image Gallery

Vitamin B12

Vitamin B12 is extremely important in the production of red blood cells in the body. Insufficient absorption of the vitamin, typically originating from the absence of a substance called the intrinsic factor that is usually secreted by the parietal cells of the stomach, is the cause of the condition known as pernicious anemia. Resulting in an inadequate amount of vitamin B12 in the body, the condition is characterized by an impairment of red blood cell development and symptoms that include pallor, breathing difficulty, feebleness, elevated pulse, digestive problems, and neurological damage. The prognosis of sufferers has been quite good since the discovery of suitable treatments in the early twentieth century. However, before that time, the condition was commonly fatal.


© 1995-2013 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, software, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.
This website is maintained by our
Graphics & Web Programming Team
in collaboration with Optical Microscopy at the
National High Magnetic Field Laboratory.
Last modification: Thursday, Nov 20, 2003 at 03:51 PM
Access Count Since November 20, 2003: 12150
Microscopes provided by:
Visit the Nikon website. Visit the Olympus Microscopy Resource Center website.