A system and method that facilitates e-commerce volume pricing is provided. In operation, the terminal adaptor will receive a speed dial code, such as 12#, from a traditional telephone and use the speed dial code to attempt to initiate a session over the packet network. As yet another variation, the head and handle can be made of stainless steel with a plastic plate attached to the head and carrying bristles. Thus, the lens barrel 10 is oscillatingly driven without use of a rotary joint or the like as employed in the conventional gimbal mechanism. The present invention provides a novel method for detecting deantigenized T cell epitopes and further reducing or eliminating immunogenicity of an otherwise immunogenic protein by substituting one or more deantigenized T cell epitope sequences for one or more T cell epitope sequences of the parent immunogenic polypeptide.