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: Missense mutations in the Fas gene resulting in autoimmune lymphoproliferative syndrome : a molecular and immunological analysis .
### Output Text:
Missense mutations in the Fas gene resulting in <span class="disease">autoimmune lymphoproliferative syndrome</span> : a molecular and immunological analysis . 