{# Crawler directives — per-engine only. A bare `robots` meta is deliberately absent: pruning here is a Google indexation decision, never a crawl block, so AI crawlers keep the full surface. #}

構造を比較する

解剖学的構造の並列比較。

注目の比較

さらに比較

Structures paired within the same type or body system, where a side-by-side reading is meaningful.