略語大辞典 [Med] 21 O.B. (G) ohne Befund (病理診断での)「異常所見なし」. 「所見なし」.(G) ohne Befund; or o.B.; "no abnormalfinding"; or "no pathological finding"; indiagnosis; [Med]. 丸善「略語大辞典」JLogosID : 11863520