The preservative agent added in both the developer and the fixer is

Which of the following local anesthetic drugs is a concern for patients with atypical plasma cholinesterase?

A) Lidocaine B) Prilocaine C) Dyclonine hydrochloride D) Benzocaine

Genes present in each racial group determine the amount of melanin produced in the epidermis of the skin

Indicate whether the statement is true or false