Task: Text Categorization
Input (English): Among the drugs used to treat this disease are the anti-bacterial TOBI and VX-770, currently in FDA Phase 2 testing. People with this disease also often suffer from "Clubbing", and the ductus deferens fails to develop in affected males. It is typically caused by a loss of a phenylalanine in its namesake transmembrane conductance regulator protein, leading to increased sodium absorption. This disease is linked with a gene on chromosome 7. Pilocarpine is applied to the skin in the sweat-chloride test for this disease. For 10 points, name this disease characterized by an abnormal buildup of mucus in the lungs.
Output (English): Science