July Gallery

Arnold Palmer waves farewell to St. Andrews in 1995

Arnold Palmer bids farewell to St Andrews. The British Open 1995. Credit: Colorsport

© colorsport

Bo95

Alzheimers brain

Alzheimer's brain. Computer processed vertical (coronal) slice through the brain of an Alzheimer patient (at left) compared with a normal brain (at right). The Alzheimer's disease brain (brown) is considerably shrunken, due to the degeneration and death of nerve cells. Apart from a decrease in brain volume, the surface of the brain is often more deeply folded. Tangled protein filaments (neurofibrillary tangles) occur within nerve cells and patients also develop brain lesions of beta-amyloid protein. Alzheimer's disease accounts for most cases of senile dementia. Symptoms include memory loss, disorientation, personality change and delusion. It ultimately leads to death

© PASIEKA/SCIENCE PHOTO LIBRARY