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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]] |