Blockage of the bile duct by a cancer, gallstones, or scarring from injury prevents the bile from being transported to the intestine and the active ingredient in the bile (bilirubin) instead accumulates in the blood.
High-density polyethylene (HDPE) is one of the most commonly used plastics in the United States. Labeled as #2 plastic, it is typically found in milk jugs, plastic bags and refillable plastic bottles.igh-density polyethylene (HDPE) is one of the most commonly used plastics in the United States. Labeled as #2 plastic, it is typically found in milk jugs, plastic bags and refillable plastic bottles.
The repeating unit within polyethylene in the most stable staggered conformation. Polyethylene (abbreviated PE) or polyethene (IUPAC name polyethene or poly(methylene)) is the most common plastic. The annual global production is around 80 million tonnes. Its primary use is in packaging (plastic bags, plastic films, geomembranes, containers including bottles, etc.). Many kinds of polyethylene are known, with most having the chemical formula (C2H4)n. PE is usually a mixture of similar polymers of ethylene with various values of n.