A method of fabricating a solar cell forms a large number of grooves on a first main surface of a p-type silicon single crystal substrate sliced out from a silicon single crystal ingot as described below. A first power rail is routed along boundaries of the CMOS integrated circuit cells proximate to the first active regions. Composition for intravenous administration of nitroglycerin does not contain ethanol or contains less ethanol than conventional compositions. The conductors are woven with the loading fibers so that when the loading fibers are placed in tension, a normal contact force is exerted at each of the contact points of the conductors. The operating device drives some of the LEDs forming the LED light source which are intended to emit monochromatic light in such a way that said LEDs emit light signals representing certain operating parameters.