Along with cleaning products, there are other forms of germicide used for medical treatments. The use of radiation to kill germs and abnormal cells is one example. Medications that are designed to kill infections and limit the spread of bacteria can also be classified under the broad category of germicides.
Stamina: The energy and strength for continuing to do something over a long period of time; power of sustained exertion, or resistance to hardship, illness etc; The basic elements of a thing; rudimentary structures or qualities.
Don't worry if you see some of the horses listed as both a stamina and a speed source (like Princequillo). The stamina sources are lines we can build into the far reaches or middle of our pedigrees to bring more stamina to our sport foals. As I said above, America has produced 25% of the world's staying bloodlines.