Copper rates, and carcass dressing percentages. Chronic copper toxicity does not normally occur in humans because of transport systems that regulate absorption and excretion. Autosomal recessive mutations in copper transport proteins can disable these systems, leading to Wilson's disease with copper accumulation and cirrhosis of the liver in persons who have inherited two defective genes. Elevated copper levels have also been linked to worsening symptoms of Alzheimer's disease. In the US, the Occupational Safety and Health Administration (OSHA) has designated a permissible exposure limit (PEL) for copper dust and fumes in the workplace as a time-weighted average (TWA) of 1 mg/m.
Liver shot upward to the base of the shoulder blade toward the spine. The punch shocks the liver, the largest gland organ, and a center of blood circulation, and causes the victim to lose focus and drive, and can cause a breathless feeling in the victim. It is usually delivered when feinting an opponent to lead with his right, which leaves the body exposed; the attacker then steps in and delivers a short, stiff uppercut, over the liver, which will likely leave the average man incapacitated. Most of the time, however, a liver punch is unintentional. It begins as a left hook