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: In ICH intrastriatally induced by 0 . 014 - unit , 0 . 070 - unit , and 0 . 350 - unit collagenase , the amount of bleeding was measured using a hemoglobin assay developed in the present study and was compared with the morphologically determined hematoma volume .
### Output Text:
In ICH intrastriatally induced by 0 . 014 - unit , 0 . 070 - unit , and 0 . 350 - unit collagenase , the amount of bleeding was measured using a hemoglobin assay developed in the present study and was compared with the morphologically determined hematoma volume . 