The Two- Stage Thymic Selection Process for Selecting Self- Tolerant

question 9

Multiple Choice

The two- stage thymic selection process for selecting self- tolerant, antigen- reactive T cells results in

• A) somatic hypermutation.
• B) allelic exclusion.
• C) clonal deletion.
• D) complementarity- determining regions.

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Definitions:

Developmental Stage

A period in life characterized by specific developmental tasks, challenges or accomplishments, which can be physical, emotional, cognitive, or social.

Sensitive Period

A time in an organism’s development when a particular experience has an especially profound effect.

Plasticity

The ability of the brain to change and adapt as a result of experience, learning, or injury.

Development

A process of growth, progression, or evolution in any aspect, such as biological, psychological, or socio-economic areas.