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: Despite inducing extensive erythrocyte lysis , TAM does not shift the osmotic fragility curves of erythrocytes .
### Output Text:
Despite inducing extensive erythrocyte lysis , <span class="chemical">TAM</span> does not shift the osmotic fragility curves of erythrocytes . 