What are some objects that are shaped like a triangle? My answer: A metronome. A balalaika. Five of the Tangram pieces. Shark teeth. A latin (or lateen) sail
Technically, most medical practices do not generate any state-defined regulated medical waste. Individual tubes of blood or body fluids are almost always smaller than 20 ml. Urine, which is not considered medical waste unless it is visibly contaminated with blood or pus, may be disposed of by pouring it down the sink.
Urea waste. Urea is excreted by the kidneys, and is less toxic than ammonia and can be transported in the blood from the liver where it is formed from ammonia. This molecule is very small, diffuses easily across cell membranes and requires no specialized transport system.