How do abnormal antigens attached to class I MHC proteins initiate an immune response?
A) Abnormal antigens are displayed on the surface of the cell's plasma membrane and recognition by regulatory T cells initiates the initial immune response.
B) Abnormal antigens are displayed on the surface of the cell's plasma membrane and recognition by CD4 T cells initiates the initial immune response.
C) Abnormal antigens are displayed on the surface of the cell's plasma membrane and recognition by CD8 T cells initiates the initial immune response.
D) Abnormal antigens are displayed on the surface of the cell's plasma membrane and recognition by plasma cells initiates the initial immune response.
E) Abnormal antigens are displayed on the surface of the cell's plasma membrane and recognition by NK cells initiates the initial immune response.
Answer: C
You might also like to view...
Which of the following covers the dentin, providing protection and firmly anchoring the periodontal ligament?
A) root B) enamel C) cementum D) gingiva E) blood vessels and nerves
A 25-year-old male named Carlos went to the optometrist with the complaint of double vision (diplopia). The optometrist performed various eye tests on Carlos. Carlos was able to read an eye chart with each individual eye but experienced the double vision when he tried to use both eyes to focus. The optometrist noticed that when he had Carlos look laterally with each eye, Carlos's right eye did not move as far laterally as his left could. Based on these tests, the optometrist suspected that the muscle innervated by was not working properly.
a. CN II (optic) b. CN III (oculomotor) c. CN IV (trochlear) d. CV VI (abducens)
The ventilation/perfusion ratio ________.
A. increases when blood flow is decreased B. is lowest at the apex of the lungs C. increases due to dilation of the pulmonary arterioles D. decreases when ventilation is increased
The ________ vein connects the basilic vein and cephalic vein.
A. axillary B. brachial C. median antebrachial D. subclavian E. median cubital