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| + | <big><center>[[Infectious agents and parasites|'''BACK TO INFECTIOUS AGENTS AND PARASITES''']]</center></big> |
| + | <big><center>[[Bacteria|'''BACK TO BACTERIA''']]</center></big> |
| [[Escherichia coli]] | | [[Escherichia coli]] |
| | | |
| [[Salmonella]] | | [[Salmonella]] |