An MC 307/DOT 407 low-pressure chemical carrier is designed to carry chemicals with pressures not to exceed _____ psi.

What is added to otic preparations to evenly distribute the drug and break up ear wax?

A) non-aqueous vehicles B) preservatives C) surfactants D) either A or C

A blister occurs:

A. at the junction between the dermis and subcutaneous tissue. B. between the papillary and reticular dermis. C. at the junction between the epidermis and dermis. D. between the stratum basale and the stratum corneum.