略語大辞典 [Chem] 27 TDL toxic dose low 毒性投与量下限. 血液学的, 生化学的, 臨床的および形態学的パラメータに病的変化を起こす新制癌剤の最低量.toxic dose low; the lowest dose of a toxic chemical or a new anti-tumor drug to cause a toxic effect; ref. determined in the phase I study of a new drug; ref. MTD(maximum tolerated dose), HNTD(high 丸善「略語大辞典」JLogosID : 11851633