Molecules in the walls of certain Gram-negative bacteria that are released when the bacterium dies or is destroyed, causing toxic effects on the host body, are called _______________

Which of the following products has been used for prevention of caries?

a. green tea b. kava kava c. garlic d. licorice e. ginger

All of the following are examples of procedures that can be performed without a grid on modern DR units, except:

A. Facial bones B. Lumbar spines C. Shoulders D. Knees