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The cystic fibrosis genetic mutation known as delta-F 508 in humans has been said to maintain a selective heterozygous advantage : heterozygous carriers of the mutation ( who are thus not affected by cystic fibrosis ) are more resistant to " V. cholerae " infections .
 disease: cystic fibrosis
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 disease: cystic fibrosis