Abstract
THE NEED for laboratory animals that are free from spontaneous or naturally occur¬ ring diseases is being recognized by research workers throughout the United States.Lab¬ oratory animals with parasitic, bacterial, and viral diseases make poor experimental animals, produce inferior biological products, and mark¬ edly increase the cost of research.Moreover, diseased animals should not be used in research, especially in radiation, nutrition, and blood studies, because the normal physiological reac¬ tions or blood counts are not obtained from them.Researchers know that the results of
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Claims 0
Judged off_topic: no plant question — claims were not extracted. This is a scope decision by the model, not a statement about the paper’s findings.