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New mouse virus may help scientists better understand cruise ship epidemics

A close relative of a common little-understood human virus that causes an estimated 23 million episodes of intestinal illness, 50,000 hospitalizations and 300 deaths each year has been discovered in mice. The finding by scientists at Washington University School of Medicine in St. Louis is reported in the March 7 issue of the journal Science. Discovery of the new virus, known as murine norovirus 1 (MNV-1), may lead to a better understanding of its disease-causing cousins known as Norwalk viruses, or human noroviruses (HNVs). HNVs cause 90 percent of epidemic viral gastroenteritis worldwide, including those that sweep through cruise ships, nursing homes and military encampments causing debilitating diarrhea and vomiting.

Researchers develop first-ever animal model for a common form of lymphoma

Researchers have developed the world's first animal model for mature human B-cell lymphomas, a discovery that may lead to the uncovering of the genetic mutations that cause these types of cancer. Mature B-cell type lymphomas account for about 85 percent of all lymphomas, and include both Hodgkin's and non-Hodgkin's lymphomas.

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