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lip. ( 1 of an embryonic BLASTOPORE) the rim of the blastopore. ( 2 of a flower perianth) a group of perianth segments united to a greater or lesser extent, to form a distinct grouping thus divided from the rest of the perianth. ( 3 of vertebrates) one of two fleshy parts (upper and lower) surrounding the mouth.
A liposme is a microscopic, fluid-filled pouch whose walls are made of layers of phospholipds identical in makeup to the phospholipids that make up cell membranes.Liposomes can be used to deliver substances to the blood stream and even cells much more efficiently than normal.When phospholipids combine with water they immediately form a microscopic sphere because one end of the phospholipid structure is very water loving.he resulting configurations are called liposomes and offer a unique delivery system for nutrients and even drugs because these microscopic spheres are so tiny that it takes a very powerful microscope to identify them.