A bookmaking apparatus executes sheet bundle stacking and image forming operations while melting adhesive at start up. These polypeptides can be used as biomarkers for diagnosis and monitoring treatment of psoriasis. The presence of micro-organism is detected, before they can produce drastic changes in the physical properties of the product, according to changes in the propagation of elastic waves through the product and, moreover, different types of micro-organisms can be distinguished. The envelope is sized to accommodate at least three tri-folded sheets of standard sized letter paper sheets or a standard business courtesy envelope as inserts such that when the insert is inserted into the envelope there is less than about a 5% skew of the insert relative to the envelope and to expose the postage indicia printed on the insert.