Endocarditis Is Often a Consequence of Bacteria Attached to the Heart

question 85

Multiple Choice

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

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

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