Which of the following specimens should not have been a direct Gram stain performed?
A. Stool
B. Sputum
C. Pleural fluid
D. CSF
Ans: A. Stool
You might also like to view...
Histamine
a. causes blood vessels to contract. b. causes capillaries to lose their permeability. c. causes an outward flow of fluids from the capillaries. d. reduces tissue swelling. e. enhances the function of cytokines.
Which of the following dietary fats is considered to be the least healthy?
A) Saturated fat B) Unsaturated fat C) Trans fat D) Cholesterol
What is the cause of hemolytic disease of the newborn?
A) The mother has eosinophilia during pregnancy. B) An O blood type mother produces anti-A antibodies which cross the placenta and react with the baby's A antigens. C) Antibodies of an A or B blood type mother cross the placenta and react with baby's O antigens. D) The mother produces anti-Rh antibodies which cross the placenta and react with baby's Rh antigens. E) The mother's mast cells degranulate in the placenta, damaging it.
Which of the following describes how the hygiene hypothesis is related to type I hypersensitivity reactions?
A) Up to 30 percent of people in undeveloped countries suffer from allergic rhinitis. B) Food allergies have increased 3-fold in chronically poor families as compared to wealthy families in the United States. C) Children living on a farm are 25 percent more likely to experience seasonal allergies than children living in a large city. D) Between 1997 and 2011, the incidence of food allergies in the United States increased by 50 percent. E) Wealthy individuals are 10 times more likely to experience anaphylactic shock as compared to someone raised in an orphanage during adolescences.