Please choose the statement that best describes the immunologic basis of organ or tissue rejection after transplantation.
A) Specific T cell populations recognize non-self MHC molecules on transplanted tissue and mount a cell-mediated immune response damaging the transplant.
B) Transplanted tissue is normally rejected only if it becomes infected.
C) Organ/tissue transplant rejection is mostly due to Type 2 cytotoxic reactions mediated by IgG and IgM.
D) IgE antibodies as well as basophils and mast cells attack the transplanted tissue if they recognize it as "non-self."
A) Specific T cell populations recognize non-self MHC molecules on transplanted tissue and mount a cell-mediated immune response damaging the transplant.
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Where are cell walls found?
a. in plant and fungal cells b. in plant cells only c. in fungal cells only d. in animal cells only
Answer the following questions true (T) or false (F)
1. The genome of all DNA animal viruses is replicated in the nucleus of the cell. 2. Bacteriophage release is a gradual process in which small numbers are released at a time. 3. Bovine spongiform encephalopathy is an example of a prion disease.
The genus Mycobacterium includes species responsible for
A) tuberculosis. B) urinary tract infections. C) food poisoning from contaminated dairy products. D) gastric ulcers. E) food poisoning from rice.
Which of the following was a crucial difference between the work of John T. Needham and Louis Pasteur on the question of spontaneous generation?
A. Whether or not the infusions were boiled. B. Whether or not the flasks were sealed. C. Whether meat or infusions were used. D. The length of time the flasks were boiled. E. The method of sealing the flasks.