Images Dated 15th July 2004

LM of blood smear showing iron-deficiency anaemia

Iron-deficiency anaemia. Light micrograph of a blood smear in a patient suffering from iron- deficiency anaemia. This is the most common form of anaemia worldwide. It is caused by a deficiency of iron, an essential component of the blood pigment haemoglobin. Here, a field of red blood cells (spherical structures) is seen. Due to this form of anaemia these cells stain poorly (they are hypochromic). Many of the cells are irregularly shaped and smaller than normal. This reduces their oxygen-carrying capacity. Symptoms include tired- ness, dizziness, and pale skin. A white blood cell (at centre, purple) serves to fight infection. Giemsa stain. Magnification: x630 at 35mm size

© DR. E. WALKER/SCIENCE PHOTO LIBRARY

Francois Magendie, French physiologist

Francois Magendie (1783-1855), French physiologist. Magendie graduated in medicine at Paris in 1808. In 1809, he described his experiments on plant-derived poisons. He used animals to determine the physiological effect of the toxin, then tried the compounds on himself. As a result, many medicinal compounds were introduced which had been derived from plant toxins, notably alkaloids, including strychnine, morphine, codeine and quinine. His wide-ranging research included the importance of proteins, emetic action, the absorption of drugs and white blood cells. He was an enthusiastic vivisectionist who avoided theory, and championed experimental physiology in France

© SCIENCE PHOTO LIBRARY

Cape BUFFALO - close-up of head

CK-3611
Cape BUFFALO - close-up of head
Maasai Mara National Park, Africa
Syncerus caffer caffer
Chris Knights
Please note that prints are for personal display purposes only and may not be reproduced in any way

© Chris Knights/ardea.com

Africa, African, Buffalo, East Africa, Face, Faces, Head, Heads, Horn, Horns, Kenya, M Ammals, Maasai Mara, Mammal, National Parks, Single, Tanzania, Wild Life