Which of the following is NOT true regarding a median toxicity dose?
A) It produces a given toxicity in 50% of patients.
B) It is determined from animal testing data.
C) It cannot be tested in humans.
D) It determines adverse effects occurring during patient clinical trials.
C) It cannot be tested in humans.
A median toxicity dose can be tested in humans, so answer choice "C" is NOT true. The median toxicity dose is the dose that produces a given toxicity in 50% of patients, and can be determined from animal testing data or because of adverse effects occurring during patient clinical trials.
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Which of the following statements about formularies is FALSE?
a. Formularies are a listing of drugs approved for a specific purpose. b. Formularies are never used as a reference manual. c. Formularies can be used as recommendations for prescribing medications. d. Formularies can determine medication reimbursement approval.
The ____ walls are thin, one-cell structures
A) arterial B) venous C) capillary D) lymph vessel