L-α-Lecithin (egg yolk, Type XVI-E), 99% (L-α-Phosphatidylcholine (egg yolk, Type XVI-E), 99%) is an active biomaterial. L-α-Lecithin (egg yolk, Type XVI-E), 99% forms liposomes with compounds (PF or BA). L-α-Lecithin (egg yolk, Type XVI-E), 99% increases membrane fluidity and affects microemulsion stability and fluorescence intensity stained with Nile red. L-α-Lecithin (egg yolk, Type XVI-E), 99% It can be used for cell membrane structure research, biological membrane potential research, and liposome research[1][2][3][4][5].