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| Subject | English | German |
| reptil. | Illinois mud turtle | Gelbliche Klappschildkröte (Kinosternon Fitzsimonsia) |
| med. | Illinois pneumonia | Illinois-Pneumonie |
| gen. | Illinois Prairie State - Springfield IL | US-Bundesstaat |
| med. | Illinois virus | Miyagawanella illini |
| med. | Illinois virus | Illinois-Virus |