| http://www.w3.org/ns/prov#value | - Basically, a bronchoalveolar lavage (BAL)is a procedure whereby an animal is placed under an anaesthetic; a long tube is threaded down itstrachea (main airway) into its smaller airways and small amounts of sterile saline are flushed in and out of the lungs in order to get a sample of the cells and fluid (and any bacteria or other infectious agents) contained in the lung.
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