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: Repeated i . p . injection of CBZ ( 15 mg / kg ) also was without effect on the development of lidocaine - or cocaine - kindled seizures .
### Output Text:
Repeated i . p . injection of <span class="chemical">CBZ</span> ( 15 mg / kg ) also was without effect on the development of <span class="chemical">lidocaine</span> - or <span class="chemical">cocaine</span> - kindled seizures . 