BIOCHEMISTRY
Studies on Phosphatidylcholine Vesicles. 1?ormationand Physical Characteristi&* Ching-hsien Huangt
A method is described for the separation of phosphatidylcholine vesicles, formed by prolonged ultrasonic irradiation under nitrogen in 0.1 M buffered NaCl solution, by molecular sieve chromatography on largepore agarose gels. One fraction of the separated vesicleS was found to be homogeneous by the criteria of gel filtration, sedimentation velocity ultracentrifugation, and electron microscopy. Experimental data
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