Which side of an opening should a fan be placed for negative-pressure ventilation?

Organisms that are able to survive within white blood cells do so by all of the following means except

A) ability to escape from the phagosome B) production of opsonins C) inactivation of oxidants D) inhibition of WBC granule fusion

Computer dispensing systems can greatly improve:

a. costs b. dispensing time and accuracy c. certification d. registration