In the sentence extracted from biomedical literature, identify all the disease entities. The required answer format is the same sentence with HTML <span> tags to mark up specific entities. 
### Entity Markup Guides:
Use <span class="disease"> to denote a disease.

### Input Text: Atm - deficient mice then exhibit many of the same symptoms found in ataxia - telangiectasia patients and in cells derived from them .
### Output Text:
Atm - deficient mice then exhibit many of the same symptoms found in <span class="disease">ataxia - telangiectasia</span> patients and in cells derived from them . 