494
Where it is combined with a C6 - deficient gene , the serum C7 levels can be surprisingly high , possibly because there is no C6 generating C56 to consume the C7 .
 Disease: C6 - deficient
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 Disease: C6 - deficient