Which of the following is a drug that prevents sepsis (a rotting of the flesh) by killing microorganisms?
A. Antihistamine
B. Antiseptic
C. Antipruritic
D. Anesthetic
E. Antibiotic
Answer: B
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The lymph nodes located in the underarm region are termed
a. axillary. b. cervical. c. mediastinal. d. inguinal.
Which statement about heart attack symptoms is true?
A) Women and men sometimes have different heart attack symptoms. B) Heart attacks always involve dizziness. C) Women and men have the same heart attack symptoms. D) Heart attacks always involve sharp chest pain.
Naive B cells search for specific antigen displayed by follicular dendritic cells in primary follicles. Naive T cells, however, search for specific antigen presented by ______
a. dendritic cells b. subcapsular sinus macrophages c. medullary sinus macrophages d. centrocytes e. tingible body macrophages.
Women who are heterozygous for a defective Bruton's tyrosine kinase (Btk) gene _____
a. are more susceptible to infections caused by extracellular pyogenic bacteria b. have a 50% chance of having a son with X-linked hyper IgM syndrome c. mount normal B-cell immune responses despite having lowered levels of serum IgG d. exhibit X-linked agammaglobulinemia e. have non-random X inactivation in their B cells.