Fish oil is the fat or oil that's extracted from fish tissue. It usually comes from oily fish such as herring, tuna, anchovies and mackerel. Yet sometimes it's produced from the livers of other fish, as is the case with cod liver oil.
A piquillo pepper is a type of small red chili pepper with a shape similar to a triangle that is grown in Spain. It has a flavor that is slightly sweet and spicy, but it is not a truly hot pepper.
Pilocarpine iontophoresis is often used to stimulate sweat secretion, as part of cystic fibrosis diagnosis. Reverse iontophoresis is a technique by which molecules are removed from within the body for detection.