PATHOLOGY

Detailed explanation-1: -Leukocytes patrol the blood and tissues throughout the body in search of intruders. When they detect a foreign substance, they send out signals and launch an immune attack. These disease-fighting cells are made in the bone marrow and are stored in many different places in the body such as the tonsils and adenoids.

Detailed explanation-2: -White blood cells They are made in your bone marrow and are part of the lymphatic system. White blood cells move through blood and tissue throughout your body, looking for foreign invaders (microbes) such as bacteria, viruses, parasites and fungi.

Detailed explanation-3: -The spleen is located in the left upper abdomen, beneath the diaphragm, and is responsible for different kinds of jobs: It stores various immune system cells. When needed, they move through the blood to other organs.

Detailed explanation-4: -immune system The bodily system of organs, tissues, cells, and cell products, which protects the body by detecting the presence of, and disabling, disease-causing agents in the body.