| intracolonic |
| cervical |
| conjunctival |
| intrauteral |
| intra-arterial |
| intracarotid |
| intracerebral |
| intracranial |
| intradermal |
| intragastric |
| intralymphatic |
| intra-amniotic |
| intramuscular |
| intranasal mucosal |
| intraocular |
| intraperitoneal |
| intraplacental |
| intrarectal |
| intrasplenic |
| intratracheal |
| intravenous |
| topical |
| skin scarification |
| subcutaneous |
| targeted lymph node |
| intraepidermal |
| oral |
| other |
| intraurethral |
| vaginal |
| intratumoral |