Sabertooth Tigers Were Relative Pussycats Nov 19, 2009
"Teeth fill in over time," said Wendy Binder of Loyola Marymount University in Los Angeles, CA. "In young animals the tooth cavity is basically hollow, but as they get older it fills in with dentin. It won't give you an exact age, but it can give you a relative age in terms of young, middle-aged or old.". Meachen-Samuels and Binder X-rayed the lower teeth and jaws of 13 American lions and 19 sabertoothed cats recovered from the La Brea Tar Pits in Los Angeles, a spot known for preserving... (Fox News)
What are teeth made of? Jul 31, 2009
Enamel is thin, though in dogs and cats, for example, its just a fraction of a millimeter in thickness so most of a tooths substance comes from the dentin underneath. Made by cells called odontoblasts, dentin is about 70 percent inorganic and tubular in structure, like a network of little conduits with liquid inside, Gengler says ... Inside the tooth, below the dentin, is the pulp chamber. (Why Files)
Dry Mouth Linked To Prescription And Over The Counter Drugs Jul 11, 2009
Foamy or stringy saliva, irritation of the tongue, burning of the tissues inside the mouth, painful ulcerations and dentin hypersensitivity (extreme sensitivity in one or more teeth) are also dry mouth symptoms. Over time, xerostomia sufferers may experience extensive tooth decay, tooth loss or gingivitis (gum disease) due to the lack of saliva. (Science Daily)
Drugs That Act On 'Fasting Signal' May Curb Insulin Resistance In Obese Mar 12, 2009
Other scientists contributing to this study were Yiguo Wang, Judith Altarejos, Renaud Dentin and Susie Hedrick at the Salk Institute, Erik Zmuda and Tsonwin Hai of the Department of Molecular and Cellular Biochemistry, Ohio State University, Xinmin Zhang at NimbleGen and Gautam Bandyopadhyay and Jerry Olefsky, Professor of Medicine at the Division of Endocrinology and Metabolism, University of California, San Diego. Adapted from materials provided by , via , a service of AAAS. Email or share... (Science Daily)
