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: The Israeli C7 - deficient cases all share a C7 haplotype and are homozygous for a mis - sense mutation in exon 9 .
### Output Text:
The Israeli <span class="disease">C7 - deficient</span> cases all share a C7 haplotype and are homozygous for a mis - sense mutation in exon 9 . 