Most health insurance plans require physicians to obtain _________ for surgical procedures

________ It is important to always remember that an item is either sterile or nonsterile

Indicate whether the statement is true or false

Following the challenge dose the mast cells and basophils:

A. undergo degranulation and release chemical mediators. B. destroy the allergen. C. block the release of the chemical mediators and histamine. D. none of the above.