منابع مشابه
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...
متن کاملRibosome Rocks
If we are to talk about molecules of life, the ribosome, made of ribosomal RNA (rRNA) and protein, is a key: it stands at the junction between information and action, i.e. between nucleic acids and proteins. It is an extraordinarily sophisticated machine that takes the information present in mRNA and uses it to build proteins, containing over 250K atoms, and measuring more than 200 in every dir...
متن کاملLunar Rocks
The Moon, like the Earth, is made of rocks. To learn about the Moon and its history, one has to learn something about lunar rocks—what they are made of, how they are studied and classified, and how our experiences in interpreting rocks on the Earth have been applied to rocks on the Moon. The lunar samples have provided our only direct information about the Moon’s minerals, chemical composition,...
متن کاملFuelling 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...
متن کاملRetraction Controversy
In the September 23, 2005 issue, Cell published a re-traction of a 2004 paper from Nitz et al. on heritable integration of parasite DNA into host genomes. This was a very unusual situation in which the paper was retracted by the journal rather than by the authors of the paper. The decision to retract the paper came after a year of careful consideration and extensive correspondence with both the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Biotechnology
سال: 1992
ISSN: 1087-0156,1546-1696
DOI: 10.1038/nbt1192-1402