o-medicine.org/inc/biomed/medicine-news.asp <a href="http://feeds.bio-medicine.org/latest-medical-newsDate:4/17/2008">http://feeds.bio-medicine.org/latest-medical-newsDate:4/17/2008</a> PHILADELPHIA - Researchers from the University of Pennsylvania School of Medicine are developing a novel approach to screen for drugs to combat neurodegenerative diseases such as amyotrophic lateral sclerosis (ALS), or Lou Gehrig's disease, using yeast cells.