| Code | Route of Administration |
| cap | gelatin capsule, oral |
| eat | diet |
| gav | gavage |
| inh | inhalation |
| ipj | intraperitoneal injection |
| ivj | intravenous injection |
| mix | multiple routes Monkeys: Procarbazine.HCl: various schedules of eat, ipj, ivj, and subcutaneous injection; Aflatoxin B1: schedule of eat and ipj; 2-Naphthylamine: capsules by gav Mice: Methyl clofenapate and Practolol: gav then eat Rats: Thiourea: ipj then wat |
| orl | gavage preweanling, followed by diet |
| wat | water |