<prompt> Not a predisposing factor for atherosclerotic plaque formation?Apo E deficiencyAlpha 2 - macroglobulinOxidised LDLAll  <response>: B i.e. Alpha 2 - macroglobulinAtherosclerosis is aw increased LDL or oxidized LDL, Lp a homocysteine and decreased or defective apo B-100 EQ. Alpha-2 a-2 macroglobulin, a large plasma glycoprotein 720 kDa containing Zn zinc and a unique internal cyclic thiol ester bond formed between cysteine glutamine, is a panproteinase inhibitor i.e. neutralize many proteases and target ceain cytokines like platelet-derived growth factor, transforming growth factor 3 etc towards paicular tissues or cells. It is not a predisposing factor for atherosclerosisQ. 