CUET Preparation Today
Leucocytes within the immune system identify and destroy foreign bodies. There are several kinds of leucocytes within the immune system including: A. Natural Killers Choose the correct answer from the options given below: |
A, C, E only A, B, C only A, C, D only B, C, E only |
A, C, E only |
The correct answer is Option (1) → A, C, E only There are several kinds of white blood cells or leucocytes within the immune system, including T cells, B cells and natural killer cells. T cells destroy invaders, and T-helper cells increase immunological activity. It is these T-helper cells that are attacked by the Human Immuno Deficiency Virus (HIV), the virus causing Acquired Immuno Deficiency Syndrome (AIDS). B cells produce antibodies. Natural killer cells are involved in the fight against both viruses and tumours. |
