In cellular immunity, T lymphocytes are responsible for the recognition and killing of foreign invaders. The cells are cytotoxic T lymphocytes (CTL) killer T cells both (a) and (b) None of these TRUE ANSWER : ? YOUR ANSWER : ?
What are the solutions prepared from weakened or dead microorganisms, viruses, or toxins that provide some immunity from diseases? Histamines Antibiotics Vaccines Drugs TRUE ANSWER : ? YOUR ANSWER : ?
If a person is vaccinated against a disease sometime in the past, which of the following is currently in your body? A very high level of antibodies against the disease antigens All of these Memory B lymphocytes for the antigen of this disease organism The disease organism itself and antigens for the disease organism TRUE ANSWER : ? YOUR ANSWER : ?
What is the result of an abnormal response of the immune system to part of a person's own body? Passive immunity Cancer An allergic response An autoimmune disease TRUE ANSWER : ? YOUR ANSWER : ?
What is a protein produced by host cells infected by viruses? Histamine Interferon Antiserum Vaccine TRUE ANSWER : ? YOUR ANSWER : ?
To detect a humoral immune response to influenza virus, it is possible to measure plasma cytokine levels dividing T cells in the draining lymph nodes cytotoxicity of virus-infected cells in tissue culture serum antibody titer TRUE ANSWER : ? YOUR ANSWER : ?
To elicit the best antibodies to mouse MHC I, it should be injected into a mouse of the same genetic background (strain) mouse of a different strain goat rat TRUE ANSWER : ? YOUR ANSWER : ?
During exposure to a foreign invader, there are more __________ present in the vertebrate body than before exposure antibodies all of these macrophages and antigens lymphocytes TRUE ANSWER : ? YOUR ANSWER : ?
Polysaccharides on the surface of infecting microorganisms can also activate complement directly in the absence of antibody via metabolic pathway antibody via the alternative pathway None of these antigen via the alternative pathway TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following immune cells would have an especially low count in a patient with advanced AIDS? None of these B lymphocytes Killer T lymphocytes Helper T lymphocyte TRUE ANSWER : ? YOUR ANSWER : ?