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.

---

Definitions:

Fluid Intake

The quantity of liquid consumed by an organism, crucial for maintaining hydration, nutrient absorption, and overall health.

Upper Respiratory Tract Infection

Infections that affect the nose, throat, and airways above the lungs, commonly caused by viruses, leading to symptoms like coughing and sneezing.

Outpatient Clinic

A healthcare facility where patients can receive diagnosis and treatment without needing an overnight stay.

Acetaminophen

A medication used to reduce fever and relieve pain, also known as paracetamol in some countries.