Surfactant Composition Phospholipid 90%(neutral 5%) saturated 50% unsaturated 35 Protein 10%(albumin 5%) SP-A, 30-35kDa, 18 ologomer, hydrophilic D 43kDa, 12 oligomer SP-B kdA, dimer, hydrophobic kdA dimerSurfactant Composition • Phospholipid 90% (neutral 5%) saturated 50％ unsaturated 35％ • Protein 10％ (albumin 5%) SP-A, 30~35kDa, 18 ologomer, hydrophilic D, 43kDa, 12 oligomer SP-B, 8kDa, dimer, hydrophobic C, 4kDa, dimer