In the sentence extracted from biomedical literature, identify all the chemical entities. The required answer format is the same sentence with HTML <span> tags to mark up specific entities. 
### Entity Markup Guides:
Use <span class="chemical"> to denote a chemical.

### Input Text: Also , histopathological renal tissue damage mediated by cisplatin was ameliorated by coenzyme Q10 treatment .
### Output Text:
Also , histopathological renal tissue damage mediated by <span class="chemical">cisplatin</span> was ameliorated by <span class="chemical">coenzyme Q10</span> treatment . 