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: CONCLUSION : This report describes the case of a woman with LACNP that developed after a steroid injection for the treatment of lateral epicondylitis .
### Output Text:
CONCLUSION : This report describes the case of a woman with LACNP that developed after a <span class="chemical">steroid</span> injection for the treatment of lateral epicondylitis . 