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: The blood amounts and hematoma volumes were significantly correlated , and the hematoma induced by 0 . 014 - unit collagenase was adequate to detect ICH deterioration .
### Output Text:
The blood amounts and hematoma volumes were significantly correlated , and the hematoma induced by 0 . 014 - unit collagenase was adequate to detect ICH deterioration . 