function of immune system

Explain why the immune system does not attack the body’s own molecules and cells.

John died the other day. He died from a tumor of the spine known as a spinal lymphoma. In actuality, he died due to lack of medical care. John was a clerk in a small store, and he had no health insurance coverage. His salary was $9 per hour. He barely could make ends meet. A while ago, he noticed a lump on his back along his spinal column. He asked a friend about it and was told to see a doctor. He did not do this because he said he could not afford it. As a result, several months went by and he noted that it was getting larger. Finally, he was suffering with pain and was losing weight. He went to the emergency room for relief of his pain and, while hospitalized, was found to have stage IV lymphoma. He died 4 weeks later. John was 28 years old.  How does delaying health care impact patients who are unable to pay for health care? What are the consequences to society when persons delay seeking health care?

Phagocytes transmit information to the lymphocytes B cells and helper T cells produce special protein called_____________ antibodies  blood  leukocytes  long-term  macrophages