The invention relates to seroreactive regions on proteins E1 and E2 of human papillomavirus 16. The compositions include at least one boron-containing material, such as but not limited to boric anhydride, and at least one silane-containing material, such as but not limited to methyltrichlorosilane. The grommet and seal assembly may include a pair of flexible grommets which are installed in openings in the sound wall and through which the air ducts are installed. The aggregated PHY data unit is generated to include the plurality of individual PHY data units, wherein the first midamble includes information that indicates a location within the aggregated PHY data unit of the third individual PHY data unit. having at least two anchoring amines, and the surface active agent includes phosphoric acid, phosphate esters, or salts thereof. A distance from the sources of textual information may be determined based on known optical properties of a camera in the WCD, such as focal length andor and focus setting.