<p>Illustrative embodiments herein disclosed relate to protein arrays, methods for making the arrays and methods for using them, among others. In some embodiments known proteins representing at least 50% of the loci in the human genome are arrayed in known positions on a support. In some embodiments arrays are made of proteins purified from cell lysates by affinity binding to the support. In some embodiments protein arrays are used to decode the binding specificity of antibodies. In some embodiments protein arrays are used to diagnose auto-immune disorders. Many other embodiments and general features are disclosed herein.</p>
