U.S. Relations With El Salvador. More information about El Salvador is available on the El Salvador Page and from other Department of State publications and other sources listed at the end of this fact sheet. u.s.-el salvador relations
lavage. n. 1. (Medicine) med the washing out of a hollow organ by flushing with water.
Bronchoalveolar lavage (BAL) removes nonadherent cells and lung lining fluid from the mucosal surface; biopsy is used to sample mucosal and submucosal tissues. In research environments, BAL allows sampling of innate (lung macrophages 3-5), cellular (B- and T- cells 6), and humoral (immunoglobulin 7) responses within the lung.