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: Detection of abnormal cardiac adrenergic neuron activity in adriamycin - induced cardiomyopathy with iodine - 125 - metaiodobenzylguanidine .
### Output Text:
Detection of abnormal cardiac adrenergic neuron activity in <span class="chemical">adriamycin</span> - induced cardiomyopathy with <span class="chemical">iodine - 125 - metaiodobenzylguanidine</span> . 