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: Whereas wild - type channels are characterized by pronounced inward rectification and a Cl > thiocyanate > Br > NO ( 3 ) > I > CH ( 3 ) SO ( 3 ) selectivity , G230E exhibits outward rectification at positive potentials and a thiocyanate > NO ( 3 ) > I > Br > Cl > CH ( 3 ) SO ( 3 ) selectivity .
### Output Text:
Whereas wild - type channels are characterized by pronounced inward rectification and a Cl > thiocyanate > Br > NO ( 3 ) > I > CH ( 3 ) SO ( 3 ) selectivity , G230E exhibits outward rectification at positive potentials and a thiocyanate > NO ( 3 ) > I > Br > Cl > CH ( 3 ) SO ( 3 ) selectivity . 