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Why Landlord Certificates Are Important A gas certificate is legal document that indicates that the property has been checked and all gas appliances have passed the required tests. Landlords need these documents before renting out their properties. These documents are also required for selling a house. The issue of gas certificates is an essential part of any plumber or gas engineer's job. By following regulations and supplying accurate certifi

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Rodent colony health surveillance has traditionally been accomplished by testing sentinel animals that have been exposed to soiled bedding from colony animals. Collecting samples from exhaust plenums on ventilated caging systems, followed by PCR analysis, has emerged as another promising method for health surveillance. However, environmental testing at the rack level is not effective for all ventilated rack designs. In this study, we tested whether media placed in soiled bedding is effective in detecting 3 adventitious agents mouse n