Moderate

HIV affects helper T-cells and:

Correct answer: A. Macrophages

  • A. Macrophages
  • B. Leukocytes
  • C. Eosinophils
  • D. Basophils

Explanation

Given that HIV is a blood-borne pathogen, a number of cell types have been proposed to be the sites of latency, including resting memory CD4+ T cells, peripheral blood monocytes, dendritic cells, and macrophages (circulating form: monocyte) in the lymph nodes, and hematopoietic stem cells in the bone marrow.

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About Circulation

The circulatory system covers the chambers, valves and conducting pathway of the human heart, along with the cardiac cycle and control of heartbeat. It compares arteries, veins and capillaries by structure and function, and explains how the lymphatic system returns tissue fluid, transports absorbed fats and supports immunity.

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