Screening for cystic fibrosis.
D002648:Child; D003550:Cystic Fibrosis / Q000201:enzymology*; D006801:Humans; D010447:Peptide Hydrolases / Q000097:blood*; D014357:Trypsin / Q000097:blood; D014361:Trypsin Inhibitors / Q000097:blood
D014361:Trypsin Inhibitors; D010447:Peptide Hydrolases; D014357:Trypsin