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: One clone from this library contained the complete cDNA - insert for HGO as determined by sequencing .
### Output Text:
One clone from this library contained the complete cDNA - insert for HGO as determined by sequencing . 