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单词 Alveolar surfactant
释义

Alveolar surfactant

英语百科

Pulmonary surfactant

Diagram of the alveoli with both cross-section and external view
Survanta, surrounded by devices for its application.

Pulmonary surfactant is a surface-active lipoprotein complex (phospholipoprotein) formed by type II alveolar cells. The proteins and lipids that make up the surfactant have both hydrophilic and hydrophobic regions. By adsorbing to the air-water interface of alveoli, with hydrophilic head groups in the water and the hydrophobic tails facing towards the air, the main lipid component of surfactant, dipalmitoylphosphatidylcholine (DPPC), reduces surface tension.

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