Macrophages destroy more infected cells by ________

Which of the following would be most helpful in the presence of elusive pulmonary organisms, such as Legionella, that cannot be isolated and detected through tradition suctioning and specimen collection methods?

A. bronchoalveolar lavage (BAL) B. thoracentesis C. percutaneous lung biopsy D. use of coude' tipped catheters

A central station alarm system is monitored by:

a. building occupants. b. the building owner/manager. c. municipal fire station personnel. d. a contracted service.