In a recent paper in Molecular and Cellular Proteomics, researchers showed that the freshwater planarium Schmidtea mediterranea has proteins in its mucous coating that are strikingly similar to ones in human mucus and other secretions, such as tear fluid. Some of the matches made sense. Others, well, not so much.
Researchers at the University of New Hampshire analyzed 54 studies and concluded that, in rodents, having free access to food is likely to affect the results of tests for the toxicity and cancer-causing effects of new drugs and other substances.
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