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: This work evaluates the effects of TAM on isolated human erythrocytes , attempting to identify the underlying mechanisms on TAM - induced hemolytic anemia and the involvement of biomembranes in its cytostatic action mechanisms .
### Output Text:
This work evaluates the effects of <span class="chemical">TAM</span> on isolated human erythrocytes , attempting to identify the underlying mechanisms on <span class="chemical">TAM</span> - induced hemolytic anemia and the involvement of biomembranes in its cytostatic action mechanisms . 