There are a few other Beatles tunes where Lennon's choice of harmonica might not be obvious. The signature riff of Please Please Me is almost as distinctive as the intro to Love Me Do.
The bile that is secreted by the liver and stored in the gallbladder is not the same as the bile that is secreted by the gallbladder. During gallbladder storage of bile, it is concentrated by removal of some water and electrolytes.
The bile helps break down fat. It also helps the liver get rid of toxins and wastes. Different diseases can block the bile ducts and cause a problem with the flow of bile: Gallstones, which can increase pressure in the gallbladder and cause a gallbladder attack.