“…Furthermore, the domain grew in size with increasing surface pressure. This phenomenon has often been observed for a first-ordered phase transition from the LE to the LC states for typical monolayers such as dipalmitoylphosphatidylcholine and myristic acid 32,33 . A possible explanation of this phenomenon is that a component e.g., C16:0 in eggPC was miscible with PA because of the similarity in hydrocarbon chain lengths, and thus, the domain shape varied.…”