white pulp give branch to

Correct Answer: A

Rationale: White pulp branches into penicillar arterioles in red pulp.

Correct Answer: C

Rationale: Hassall's corpuscles increase with age ; they're in medulla , surrounded by reticular cells not lymphocytes , and are acidophilic .

Correct Answer: C

Rationale: Complement activates via classical (antibody-dependent), alternative (spontaneous), and lectin (mannose-binding) pathways ; other options misname pathways.

Correct Answer: B

Rationale: TCRs (T-cell receptors) are on T cells ; B cells have BCRs, not TCRs.

Correct Answer: B

Rationale: AICD removes overstimulated T cells ; it's not for proliferation , cytokine production , or B7 affinity .