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(A) SAXD patterns of osmotically stressed MLVs (Π = 1.31 atm) in the presence and absence of Cer. Two lamellar phases (Lα (∗) and Lβ (|)) are observed for Cer/SM = 0.5. (B) The corresponding electron-density profiles derived from the peak intensities. Profiles shown are for POPC/SM/Chol (i), the Lα phase of POPC/SM/Chol (ii), and the coexisting Lβ domains (iii).
