The Major Categories of Hypersensitivities That Typically Involve a B-Cell

question 42

Multiple Choice

The major categories of hypersensitivities that typically involve a B-cell immunoglobulin response is/are

• A)Type 1 only.
• B)Type 1 and Type 4.
• C)Type 4 only.
• D)Type 1, Type 2, Type 3.
• E)Type 1, Type 2, Type 3, and Type 4.

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Definitions:

Inversion Valve

A normally open air brake valve used for emergency applications of tractor brakes for a one-time stop during a total system failure. Hold-off air is dumped in relation to application pressure so that spring chamber force can effect emergency service braking. Incorporated in some modulating valves.

Tractor Protection Valve

A safety valve in commercial vehicles that prevents air loss in the tractor in the event of a trailer breakaway or air line failure.

FMVSS-121 Compliant

FMVSS-121 compliant means adhering to the Federal Motor Vehicle Safety Standard 121, relating to air brake systems in heavy vehicles.

Air Reservoirs

Tanks used in automotive and industrial applications to store compressed air, providing a supply for various functions such as braking.