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: This was further evidenced by absence of oxygen consumption and hemoglobin oxidation both determined in parallel with TAM - induced hemolysis .
### Output Text:
This was further evidenced by absence of <span class="chemical">oxygen</span> consumption and hemoglobin oxidation both determined in parallel with <span class="chemical">TAM</span> - induced hemolysis . 