Surfactant protein ( SP ) -A and SP-D are pattern-recognition molecules of the respiratory tract that activate inflammatory and phagocytic defences after binding to microbial sugars .
B-GeneOrGeneProduct I-GeneOrGeneProduct I-GeneOrGeneProduct I-GeneOrGeneProduct I-GeneOrGeneProduct I-GeneOrGeneProduct O B-GeneOrGeneProduct O O O O O O O O O B-DiseaseOrPhenotypicFeature O O O O O O O B-ChemicalEntity O