A low calorie sweetener for food products which avoids the off-taste of conventional substitute sweeteners. The recording head includes a nozzle face on which an ink-injecting nozzle is formed. The antibody is also able to cure mice in a therapeutic setting when treated as late as up to 60 hours after infection with swine H1N1 virus. The load mechanism applies a load that is substantially constant throughout the range of position of the lever system load attachment point.