Choose the statement that explains why patient specimens have to be plated and c

Question

Choose the statement that explains why patient specimens have to be plated and cultured using differential and selective media for laboratory diagnosis of staphylococcal infections. The population of staphylococcal cells in the patent's tissues is so small that highly enriched media has to be used to increase the growth of staphylococcus. Staphylococcus grows in areas of the body that are highly populated with normal flora, so these media inhibit other microorganisms so that it is easier to find the staphylococci. These media are very high in nutrients, so Staphylococcus grows well. These media have antibiotics which inhibit staphylococcus, and therefore, assist in the treatment or the patents infection.

Explanation / Answer

The answer is B.

Staphylococcus grows in areas of the body that are highly populated with normal flora, so these media inhibit other microorganisms so that it is easier to find the Staphylococci.

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