T cells or T lymphocytes are a type of lymphocyte (in turn, a type of white blood cell) that plays a central role in cell-mediated immunity. They can be distinguished from other lymphocytes, such as B cells and natural killer cells (NK cells), by the presence of a T-cell receptor (TCR) on the cell surface. cells or T lymphocytes are a type of lymphocyte (in turn, a type of white blood cell) that plays a central role in cell-mediated immunity. They can be distinguished from other lymphocytes, such as B cells and natural killer cells (NK cells), by the presence of a T-cell receptor (TCR) on the cell surface.
Definition of Health According to WHO. World Health Organization (WHO), defined Health as being âa state of complete physical, mental, and social well-being and not merely the absence of disease or infirmityâ in 1948. Since then only few of the publications believed on the definition of health and its evolution in the first 6 decades.
Health is the state of complete physical, mental and social well-being, and not merely the absence of disease. From this definition, you can list the three main aspects of health. They are: 1. physical well-being 2. mental well-being 3. social well-being.utritional status is the level of nutrition of an individual. The level to which the food eaten is used by the body and the effect it has on the health of the individual is the nutritional status. An adequate amount of the right food will provide the necessary nourishment required by the body.