When you test positive for HIV, they are actually testing for antibodies. A substance which is recognized as foreign by the immune system. Antigens are either whole microorganisms, or they can be a portion of an organism or virus. Lymphocytes that produce antibodies. Centers for Disease Control and Prevention.
Cytokines are chemical substances that are secreted by lymphocytes, monocytes and macrophages.
A type of T cell which kill cells that are infected by viruses or cancer. They are also known as T8 cells. White blood cells which are found in the spleen and other lymphoid organs. The organism which causes a disease. Human Immunodeficiency Virus.