A differential gear comprises power input sprocket gear, differential pinion shaft, differential pinion, differential pinion support seat, side support cover, and differential side gear. The opening is opened and closed by a lid. The invention also relates to a terapeutical composition comprising a protein hydrolysate and a synthetic emulsifier andor a lipid based gain fraction having emulsifying properties. Accordingly, the input transistors to the LNA may float when the LNA is turned off, thereby coupling the input signal voltage to the source and drain terminals. A scan test mode input and a memory bypass enable input are used to determine whether the memory will be permitted to receive a clock signal. A trough traverses the periphery of the cutting board to ensure complete drainage of the fluids from the cutting surface.