Drugs that can be given down the endotracheal tube include all of the following except:

This antigen can be used to identify stem cells by immunophenotyping:

a. CD34 b. CD4 c. CD8 d. CD33

A differential pressure transducer can measure flow if the pressure ports are connected to a:

I. venturi pneumotachometer II. at the inlet and outlet of a flow delivery valve III. at the pressure ports of a pneumotachometer A) I only B) II only C) I and II only D) I, II, and III only