Which cell is the HIV replication inside?

Which cell is the HIV replication inside?

• A. White blood cells
• B. Red blood cells
• C. Platelets
• D. Neurons

Answer: (A)

HIV primarily replicates inside white blood cells, especially CD4+ T lymphocytes. These cells express the CD4 receptor that HIV uses to gain entry, and the virus also relies on co-receptors to fuse with the cell. Once inside, HIV reverse transcribes its RNA into DNA and integrates into the host genome, hijacking the cell’s machinery to produce new viral particles. This replication inside CD4+ T cells leads to their destruction or dysfunction, which weakens the immune system over time. Red blood cells and platelets lack the cellular machinery and receptors HIV uses to enter and replicate; they’re not suitable hosts. Neurons are not typical targets for productive HIV replication either. Some macrophages (also white blood cells) can be infected, but the most critical and common site of HIV replication is CD4+ T cells, making white blood cells the best answer.

HIV primarily replicates inside white blood cells, especially CD4+ T lymphocytes. These cells express the CD4 receptor that HIV uses to gain entry, and the virus also relies on co-receptors to fuse with the cell. Once inside, HIV reverse transcribes its RNA into DNA and integrates into the host genome, hijacking the cell’s machinery to produce new viral particles. This replication inside CD4+ T cells leads to their destruction or dysfunction, which weakens the immune system over time.

Red blood cells and platelets lack the cellular machinery and receptors HIV uses to enter and replicate; they’re not suitable hosts. Neurons are not typical targets for productive HIV replication either. Some macrophages (also white blood cells) can be infected, but the most critical and common site of HIV replication is CD4+ T cells, making white blood cells the best answer.