Which type of swab is not suitable for the collection of a viral specimen as a result of its ability to interfere with certain tests?
a. Dacron
b. Calcium alginate
c. Cotton
d. Rayon
B
Swab specimens should not contain chemicals or other compounds that may be toxic to cultured cells and are therefore unsuitable for viral specimen collection. Calcium-alginate swabs interfere with polymerase chain reaction (PCR), the recovery of some enveloped viruses, and fluores-cent-antibody tests; therefore they should not be used.
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Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What will be an ideal response?
At which gestational week is the developing human designated a fetus?
a. 4 b. 8 c. 12 d. 16 e. 20
Unlike red blood cells, white blood cells are capable of leaving blood vessels to enter the tissue fluid between cells
Indicate whether the statement is true or false
Membrane proteins perform all of the following functions except:
A) transport. B) cell recognition. C) structural support. D) maintainance of membrane fluidity. E) communication.