Which of the following is not the cellular element of blood?

Options

A. T-cells
B. B-cells
C. Plasma
D. Monocytes

Answer

To determine which of the following is not a cellular element of blood, we need to analyze each option provided.

1. **T-cells**: T-cells, also known as T-lymphocytes, are a type of white blood cell that plays a crucial role in the immune response by destroying infected cells. Since T-cells are indeed a cellular element of blood, this option is not the correct answer.

2. **B-cells**: B-cells are another type of white blood cell that is responsible for producing antibodies. These antibodies help in fighting infections caused by bacteria and viruses. Therefore, B-cells are also considered a cellular element of blood, making this option incorrect as well.

3. **Plasma**: Plasma is the liquid component of blood that carries water, salts, enzymes, and other substances. It does not consist of cells; rather, it serves as a medium for transporting cellular elements. Thus, plasma is not a cellular element of blood, making this option the correct answer.

4. **Monocytes**: Monocytes are a type of white blood cell involved in the immune response, particularly in inflammatory and anti-inflammatory processes. Since monocytes are cellular elements, this option is also incorrect.

In conclusion, the option that is not a cellular element of blood is **Plasma**.