👉 Ctenidials, also known as "cystic fibrosis" (CF), are a genetic disorder that affects the lungs and airways. CF is caused by mutations in the CYP1B1 gene, which encodes for the enzyme cystic fibrosis transmembrane conductance regulator (CFTR). This enzyme helps to regulate the water-soluble chloride ions in the body, including sodium, potassium, and chloride. Mutations in this gene can lead to a buildup of