lipid IIA + a 1-hexadecanoyl-2-acyl-sn-glycero-3-phosphocholine <=> lipid IIB + a 2-acyl-sn-glycero-3-phosphocholine
lipid iia + a 1-hexadecanoyl-2-acyl-sn-glycero-3-phosphocholine <=> lipid iib + a 2-acyl-sn-glycero-3-phosphocholine
lipid IIA + a 1-hexadecanoyl-2-acyl-sn-glycero-3-phosphocholine <=> lipid IIB + a 2-acyl-sn-glycero-3-phosphocholine
lipid iia + a 1-hexadecanoyl-2-acyl-sn-glycero-3-phosphocholine <=> lipid iib + a 2-acyl-sn-glycero-3-phosphocholine