ATI Immune System Quizlet Related

Review ATI Immune System Quizlet related questions and content

The percentage of developing thymocytes undergoing negative selection in the thymus is close to

  • A. 90%
  • B. 50%
  • C. 25%
  • D. 10%
Correct Answer: A

Rationale: The correct answer is A (90%). Negative selection in the thymus eliminates self-reactive T cells. The process ensures self-tolerance. The majority of developing thymocytes are removed during negative selection, making it close to 90%. Choices B, C, and D are incorrect because negative selection eliminates a high percentage of thymocytes, not a lower percentage as indicated in those options.