Name the three types of T-lymphocytes.

Explanation

### Step-by-Step Solution:

1. **Understanding T-Lymphocytes**: T-lymphocytes, also known as T cells, are a type of white blood cell that play a crucial role in the immune response. They are part of the acquired immunity, which is the immunity that develops after exposure to pathogens.

2. **Identifying the Types**: There are three main types of T-lymphocytes:
- **T Helper Cells (TH Cells)**: These cells assist other immune cells, particularly B cells, in generating antibodies against pathogens. They play a pivotal role in signaling and coordinating the immune response.
- **T Cytotoxic Cells (TC Cells)**: Also known as killer cells, these T cells directly attack and kill infected or cancerous cells without the need for intermediary signals.
- **T Suppressor Cells (TS Cells)**: These cells help regulate and suppress the immune response after the pathogen has been dealt with. They ensure that the immune response does not become overactive and start attacking the body’s own cells.
...