Which of the following situations would result in a more rapid response by the immune system to an infection?
A) First-time exposure to an antigen with memory T cell activation
B) First-time exposure to an antigen with memory B cell activation
C) First-time exposure to an antigen
D) Second exposure to an antigen with memory B cell activation
D
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Folic acid before conception and during pregnancy helps prevent ________
a. delivering a premature newborn b. dysplasia c. amenorrhea d. birth defects to the baby's brain or spine
You have been called for an 86-year-old man who fell. The patient is incontinent and has an ulcerative rash beneath his adult diaper. During your assessment, you also find many bruises to his body in various stages of healing. The son reports that the patient fell getting out of bed; however, the daughter-in-law states that the patient fell while getting dressed. Which of the following is the BEST example of how to document the patient's history in your PCR?
A) "Family members are unable to provide accurate history of event." B) "Son states that the patient fell while getting out of bed; daughter-in-law states that the patient fell while getting dressed." C) "The patient may have fallen while getting out of bed, or while getting dressed." D) "Family members are unable to agree upon history of event, causing suspicion for elder abuse."
Of the following, which is not an appropriate specimen for flow cytometry?
a. Blood b. Bone marrow c. Lymphoid tissue d. Plasma
Therapeutic radioisotopes are characterized by
a. very short half-lives. b. half-lives that are exactly the same. c. relatively long half-lives. d. half-lives that remain constant for all eternity.