A new analysis of the remains of a Tyrannosaurus rex (T. rex) that roamed Earth 68 million years ago has confirmed traces of protein from blood and bone, tendons, or cartilage.

The findings published in the Journal of Proteome Research is the latest dataset in an ongoing controversy over which biochemical remnants can be detected in the dino.

Scientists in New York and North Carolina say they have assembled the first functioning prototype of an artificial Golgi organelle, a key structure inside cells which helps process and package hormones, enzymes, and other substances that allow the body to function normally.

They say their 'lab-on-a-chip' device could lead to a faster and safer method for producing heparin, the widely used anticoagulant or blood thinner, the researchers note. The study is published in the Journal of the American Chemical Society. 

The Golgi organelle is named for Camillo Golgi, the Italian scientist and Nobel Prize winner who discovered the structure in 1898.

Striking differences in the risk factors for developing heart failure (HF) and patient prognosis exist between men and women, according to a review article published in the August 4, 2009, issue of the Journal of the American College of Cardiology.
 
Men and women may also respond differently to treatment, raising concerns about whether current practices provide the best care and reinforcing the urgency for sex-specific clinical trials for heart failure. 

Genetic disease such as leukemia are a big target in 21st century science thanks to advancements in our understanding of how the body works.  

Some of our treatments, like chemotherapy, are rather brute force in their solution.   Now scientists from the Université de Montréal and McGill University say they have re-engineered a human enzyme, a protein that accelerates chemical reactions within the human body, to become highly resistant to harmful agents like chemotherapy.

Researchers writing in BMC Infectious Diseases say their numerical model of influenza transmission and treatment suggests that if a H1N1 Swine Flu pandemic behaves like the 1918 flu, antiviral treatments should be reserved for the young.

They argue that providing the elderly with antiviral drugs would not significantly reduce mortality, and may lead to an increase in resistance.   This is not a case of young researchers doing social engineering.  H1N1 swine flu has also impacted the young much more than the old, the reverse of traditional flu.

Depressed people may prefer the dark but it won't be a good thing for their cognitive abilities, say researchers writing in Environmental Health.

They  used weather data from NASA satellites to measure sunlight exposure across the United States and linked this information to the prevalence of cognitive impairment in depressed people.   Shia Kent, from the University of Alabama at Birmingham, led the team of US researchers who used cross-sectional data from 14,474 people in the NIH-NINDS-funded REGARDS study, a longitudinal study investigating stroke incidence and risk factors, to study associations between depression, cognitive function and sunlight.