Immediate Hypersensitivity Reactions Are Mediated by IgE Secreted by B

question 139

True/False

Immediate hypersensitivity reactions are mediated by IgE secreted by B cells, whereas delayed hypersensitivity is mediated by T cells.

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Definitions:

Threshold

The minimum level of stimulus intensity required for a sensation to be perceived or a response to be elicited.

Sleep Cycles

The progression through various stages of non-REM and REM sleep that repeats cyclically throughout a typical night's rest.

NREM Sleep

The period of sleep outside of REM sleep, characterized by slower brain waves, reduced eye movement, and lack of dreaming, which is associated with physical recovery and memory consolidation.

REM Sleep

Rapid Eye Movement sleep, a sleep stage characterized by eye movements, increased brain activity, and vivid dreams.