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: We found that in fractionated blood cell types ( including erythroid , myeloid , and lymphoid cell lineages ) there was a significant excess of G6PD - normal cells .
### Output Text:
We found that in fractionated blood cell types ( including erythroid , myeloid , and lymphoid cell lineages ) there was a significant excess of G6PD - normal cells . 