[2025-10-01T21:56:37.976465] [QUERYOME] Starting research for query 960: 'Instructions:
 Answer the question below. First, respond with the single best option letter (A, B, C, or D). Then provide a concise reasoning (1–3 sentences). Use both the retrieved evidence and your own medical knowledge to choose the most accurate answer.

Question:
True about ythT cells:

Options:
A. Are helper t cells
B. Oligoclonal proliferation
C. Antigen presentation
D. Opsonization'
[2025-10-01T21:56:38.017221] [PI] Starting research for query: 'Instructions:
 Answer the question below. First, respond with the single best option letter (A, B, C, or D). Then provide a concise reasoning (1–3 sentences). Use both the retrieved evidence and your own medical knowledge to choose the most accurate answer.

Question:
True about ythT cells:

Options:
A. Are helper t cells
B. Oligoclonal proliferation
C. Antigen presentation
D. Opsonization'
[2025-10-01T21:56:38.018599] Saving text to bench_final/run1/medmcqa/medmcqa_2520/pi_initial_prompt.txt
[2025-10-01T21:56:38.023596] [PI] Calling o3 for initial analysis...
[2025-10-01T21:56:45.151480] [PI] Reasoning iteration 1
[2025-10-01T21:56:45.153332] [PI reasoning] **Clarifying γδ T cells**

I need to address the question regarding “ythT cells.” It seems like a typo for “γδ T cells.” Understanding these cells, I find that they are a unique subset with a gamma delta TCR and are linked to innate-like immunity. They exhibit limited diversity, which supports oligoclonal proliferation. They aren't primarily helper T cells, don’t mainly present antigens, or opsonize like antibodies do. The statement that's true is **B. Oligoclonal proliferation**. I should find evidence for this!
[2025-10-01T21:56:45.154854] [PI] Executing function call 1: hybrid_search
[2025-10-01T21:56:45.156757] [PI] Function arguments: {'query': 'gamma delta T cells oligoclonal limited diversity repertoire', 'k': 10, 'faiss_weight': 0.7, 'bm25_weight': 0.3, 'use_rrf': True}
[2025-10-01T21:56:45.158306] Saving JSON to bench_final/run1/medmcqa/medmcqa_2520/pi_iteration_1_tool_call_2_hybrid_search.json
[2025-10-01T21:56:46.995696] [PI] Function hybrid_search executed successfully
[2025-10-01T21:56:46.997595] Saving JSON to bench_final/run1/medmcqa/medmcqa_2520/pi_iteration_1_tool_result_2_hybrid_search.json
[2025-10-01T21:56:47.006795] [PI] Continuing reasoning with 1 function responses...
[2025-10-01T21:56:51.913660] [PI] Reasoning iteration 2
[2025-10-01T21:56:51.915447] [PI] No function calls found in response
[2025-10-01T21:56:51.916957] [PI] No more function calls - research complete
[2025-10-01T21:56:51.918814] Saving text to bench_final/run1/medmcqa/medmcqa_2520/pi_final_answer.txt
[2025-10-01T21:56:51.924054] [QUERYOME] Query completed successfully
