Abstract
Membranes of Mycoplasma pneumoniae were prepared following several different cell lysis procedures (freeze-thaw, french press, digitonin, sonication, osmotic shock, pH shock). All possessed some degree of toxicity for ciliated epithelial cells, but the french press and freeze-thaw processes were optimal in terms of lysis efficiency, membrane yield, and cytotoxicity. Membrane proteins from virulent and attenuated mycoplasmas were electrophoresed with a new, high resolution electrophoresis technique (gradient polyacrylamide gels), and strain differences were detectable among the 50+ discernible bands.
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