Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Cystic Fibrosis ?
    ### Response:
    Cystic fibrosis (SIS-tik fi-BRO-sis), or CF, is an inherited disease of the secretory (see-KREH-tor-ee) glands. Secretory glands include glands that make mucus and sweat.
                
"Inherited" means the disease is passed from parents to children through genes.
    