An abnormal cell would be identified by the immune system because it showed
A) Class I MHC proteins.
B) Class II MHC proteins.
C) Class I MHC proteins with an antigen bound.
D) Class II MHC proteins with an antigen bound.
E) a CD3 receptor complex in the membrane.
C
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The fibrous tunic of the eye is composed of two parts. What are they?
A. The cornea and the sclera B. The conjunctiva and the cornea C. The conjunctiva and the sclera D. The sclera and the retina E. The sclera and the uvea
Each nephron consists of a ________ component and a __________ component
Fill in the blank(s) with correct word
Cholecystokinin
a. inhibits stomach emptying b. stimulates pancreatic enzyme secretion. c. causes contraction of the gallbladder. d. both (b) and (c) above. e. all of these answers.
Opening and closing of the heart valves is caused by ________.
A. gravity B. breathing C. valves contracting and relaxing D. osmotic gradients E. pressure gradients