Methylene blue vs. nitrite.
D000818:Animals; D005260:Female; D007928:Lethal Dose 50; D008751:Methylene Blue / Q000008:administration & dosage*; D009573:Nitrites / Q000506:poisoning*; D012756:Sheep; D012977:Sodium Nitrite / Q000506:poisoning* / Q000633:toxicity
D009573:Nitrites; D012977:Sodium Nitrite; D008751:Methylene Blue