How Many Different MHC Classical Class I Proteins Does Each

question 31

Multiple Choice

How many different MHC classical class I proteins does each nucleated cell in a human heterozygous at the MHC locus express?

• A)None.Only APC express class I.
• B)One
• C)Two
• D)Three
• E)Six

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Definitions:

Tractor-Trailer Semi-Combination

A combination of a tractor unit and one or more semi-trailers to carry freight.

Secondary Circuit Signal

A signal within an electrical system that operates in a subsidiary capacity to the primary circuit, often used for controlling or monitoring purposes.

Trailer Service Signal Circuit

A circuit in a vehicle's electrical system designed to control the indicator signals used in trailer towing.

Tractor Protection Valve

A safety valve in air brake systems that prevents air loss in the tractor, preserving air for control of the trailer's brakes.