TH cells
HIV (Human Immunodeficiency Virus) primarily targets and infects T-helper cells (also known as CD4+ T cells), which are a type of immune cell. The virus replicates within these cells and produces progeny viruses, eventually leading to the destruction of the immune system over time.
So, the correct option is (D): TH cells
The following diagram shown restriction sites in E. coli cloning vector pBR322. Find the role of ‘X’ and ‘Y’gens :