Diversity and controversy

Screening for prostate cancer: Controversy? What controversy?

for the absence of a reduction in mortality in the plco trial and in comparison with the difference seen in the erspc trial. The truth of the matter is the psa test should not be used at all in screening for prostate cancer in the manner it has heretofore been used. Prostate-specific antigen, discovered in 1970 5,6 , is a normal component of the prostate. It is not cancer-specific. Rather, it i...

Insulin: discovery and controversy.

During the first two decades of the 20th century, several investigators prepared extracts of pancreas that were often successful in lowering blood sugar and reducing glycosuria in test animals. However, they were unable to remove impurities, and toxic reactions prevented its use in humans with diabetes. In the spring of 1921, Frederick G. Banting, a young Ontario orthopedic surgeon, was given l...

phylogeography and genetic diversity of the lesser mouse- eared bat (myotis blythii) in iran

in current study, 63 samples of bat populations collected from differ regions were used for evaluating the geographic variations. twenty cranial and dental characters for traditional morphometric and landmarks method on the ventral, dorsal skull and mandible for geometry morphometric studies were used. statistical analyses of traditional morphometric and geometry morphometric data indicated low...

Progress, frustration and controversy.

Fuelling controversy

The US President’s annual State of the Union speech is a favorite place to unveil new initiatives. For the past several months there has been a buzz that President George W. Bush would say something dramatic about climate change. “Buzz” in Washington can mean political trial balloons, genuine leaks or simply wishful thinking. It took a while to sort out the truth in this case. The week before t...