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: RESULTS : Significant decreases of HDL - C , Apo A - I and Apo A - II and an increase of triglyceride levels in VLDL were induced by CPA .
### Output Text:
RESULTS : Significant decreases of HDL - C , Apo A - I and Apo A - II and an increase of <span class="chemical">triglyceride</span> levels in VLDL were induced by <span class="chemical">CPA</span> . 