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: Our results indicate that the pathogenesis of C7D is heterogeneous like most of the other deficiencies of complement components . .
### Output Text:
Our results indicate that the pathogenesis of <span class="disease">C7D</span> is heterogeneous like most of the other <span class="disease">deficiencies of complement components</span> . . 