A filtration module is disclosed, comprising at least one hollow capillary filtration membrane, in particular having a retentate side inside the hollow capillary and a permeate side outside the capillary, characterized in that the retentate side of the capillary filtration membrane has at least one dent with an aperture angle \u03a6 smaller than 180\xb0. Vectors and host cells directed to these polypeptides are provided. A processor receives the unipolar EGM waveform and extracts two or more features representative of heart activity at the electrode. In this manner, a color change in the film arising from impact of the piston accelerated by a blast event provides visual indication that a blast overpressure encountered from the blast event was not less than the predetermined minimum threshold pressure. The epitaxial layer has a first or a second conductivity type. The ring reinforcement may include: a first reinforcement mounted to front and side edges of the sunroof hole to selectively receive the sunroof therein; and a second reinforcement provided on a rear edge of the sunroof hole, wherein the second reinforcement couples each distal end of the first reinforcement.