Surfactants and enzymes in respiratory mucus.
D001980:Bronchi; D010450:Endopeptidases / Q000032:analysis*; D006801:Humans; D008666:Metalloendopeptidases; D009093:Mucus / Q000032:analysis*; D011663:Pulmonary Surfactants / Q000032:analysis*; D014357:Trypsin / Q000032:analysis*
D011663:Pulmonary Surfactants; D010450:Endopeptidases; D014357:Trypsin; D008666:Metalloendopeptidases; C022510:thimet oligopeptidase