Derivation Web

source_1bf5f5e8553d4f42

# Source literature boundary memo

## Research question

Across retrieved fact-level receipts for rapamycin_longevity, which endpoints show directionally favorable versus null/non-convergent signals, and what matched PICO remains untested?

## Selection criteria

The source-literature fallback selected rapamycin_longevity because the domain snapshot exposed enough fact-backed, topic-overlapping pa…