Abstract: The invention relates to methods of detecting a secreted polypeptide produced by a cell, as well as to methods for selecting a cell that produces high levels of the secreted polypeptide. Such methods can be used to select a cell producing high levels of a secreted polypeptide encoded by a heterologous nucleic acid that has been introduced into the cell.

Abstract: A combined dock seal and shelter structure for a truck loading dock includes a vehicle-engaging seal member that is removably or replaceably attached to a compressible side pad. A backer can be used to help mount the side pad to a wall, adjacent to a doorway. The side pad preferably comprises a resiliently compressible foam core within a pliable cover 4, while the seal member comprises a pliable curtain or semi-rigid panel that are flexible but less compressible than the foam core.