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D21 Anti-Allergic and Respiratory System Agents D018944 +
D21.760 Respiratory System Agents D019141 +
D21.760.090 Antitussive Agents D000996
D21.760.250 Expectorants D005100
D21.760.600 Pulmonary Surfactants D011663
D21.760.560 Nasal Decongestants D014663
D21.760.170 Bronchoconstrictor Agents D016085
D21.760.050 Anti-Asthmatic Agents D018927 +
D27 Chemical Actions and Uses D020164 +
D27.505 Pharmacologic Actions D020228 +
D27.505.954 Therapeutic Uses D045506 +
D27.505.954.033 Anti-Allergic and Respiratory System Agents D018944 +
D27.505.954.033.760 Respiratory System Agents D019141 +
D27.505.954.033.760.090 Antitussive Agents D000996
D27.505.954.033.760.250 Expectorants D005100
D27.505.954.033.760.600 Pulmonary Surfactants D011663
D27.505.954.033.760.560 Nasal Decongestants D014663
D27.505.954.033.760.170 Bronchoconstrictor Agents D016085
D27.505.954.033.760.050 Anti-Asthmatic Agents D018927 +