Endocarditis Is Often a Consequence of Bacteria Attached to the Heart

question 57

Multiple Choice

Endocarditis is often a consequence of bacteria attached to the heart valves.These microbes are not eliminated by circulating lymphocytes because

• A)lymphocytes cannot engulf microbes attached to tissue.
• B)Gram-positive microbes don't have an exotoxin surface molecule to trigger an immune response.
• C)these microbes become covered in platelets and fibrin which is not recognized as foreign by the immune system.
• D)lymphocytes do not circulate through the heart valves to detect the presence of microbes.

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