How does immunofluorescence microscopy detect rabies in brain tissue of an infected animal?
A) Fluorescent-tagged antibodies provide light needed to see the virus particles in the microscope.
B) Fluorescent-tagged antibodies bind to cytotoxic T cells that are attempting to kill infected cells in the tissue.
C) Rabies virus naturally fluoresces under ultraviolet light.
D) Fluorescent-tagged antibodies bind to the antibodies generated to fight the infection.
E) Fluorescent-tagged antibodies bind to rabies antigen in the tissue and are visible in a specialized microscope.
Answer: E
You might also like to view...
Which would be most likely to be fossilized?
A. a common large worm. B. a common thick-shelled crustacean. C. an herbaceous plant that is only found at very high altitudes. D. a rare, desert-dwelling lizard.
Fertilization of an ovum normally occurs in the
A. uterus. B. ovary. C. oviduct. D. vagina. E. cervix.
Most symptoms of endotoxins can be treated with administration of anti-endotoxin antibodies
Indicate whether the statement is true or false
The gene PD-1 plays an important role in immune response to tumor cells. How would using gene editing to knock out this gene help T cells recognize and kill cancer cells?
A) PD-1 will be expressed in the cytosol of the cancer cell. This protects PD-1 from the T cell. B) PD-1 will be expressed in the cytosol of the T cell. This protects PD-1 from cancer cells. C) PD-1 will not be expressed on the cancer cell surface. This prevents T cell recognition. D) PD-1 will not be expressed on the T cell surface. This circumvents one line of the cancer cells defense.