1. Skandin, Arch. Physiol., 77, 148 (1937). The work of Artom and his colleagues (NATURE, 139, 836 (1937); Arch. internal. Physiol., 49, 32, 37) is also based on the assumption that phosphatide P does not exchange.
2. Comp. Gerhartz, H., Arch. gesamt. Physiol., 156, 215 (1914).