Which cell acts as factory of HIV ?A Macrophage B TH cells C TK cells D N.K. cells

The cell that acts as the factory of HIV is the TH cell.

The cell that acts as a factory for HIV is the T-helper cell, also known as CD4+ T cell. So, the answer is B. TH cells.

Here's a step-by-step explanation:

1. HIV, or Human Immunodeficiency Virus, primarily infects immune cells in the human body.

2. The primary target of HIV are T-helper cells (TH cells), which are a type of white blood cell that plays a central role in the immune response by stimulating other immune cells to fight off infection.

3. Once HIV enters the body, it attaches to the TH cell.

4. The virus then fuses with the cell, releasing its RNA and enzymes into the cell.

5. The viral RNA is converted into DNA by the enzyme reverse transcriptase.

6. This viral DNA is then integrated into the host cell's DNA with the help of another enzyme called integrase.

7. The host cell then starts producing viral proteins, which are assembled into new HIV particles.

8. These new HIV particles are released from the host cell and can go on to infect other cells.

So, in this way, the TH cell acts as a 'factory' for producing more HIV.