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: Adrenaline - induced hypertension was used to destroy the BBB , which was evaluated using triphenyltetrazolium ( TTC ) staining of the brain slices just after giving adrenaline for 30 s .
### Output Text:
<span class="chemical">Adrenaline</span> - induced hypertension was used to destroy the BBB , which was evaluated using <span class="chemical">triphenyltetrazolium</span> ( <span class="chemical">TTC</span> ) staining of the brain slices just after giving <span class="chemical">adrenaline</span> for 30 s . 