Upregulation of glial cell line-derived neurotrophic factor (GDNF) in the rat cochlea following noise. Pharmacologic manipulation of the labyrinth with novel and traditional agents delivered to the inner ear.
Slavery in the United States was the legal institution of human chattel slavery that existed in the United States of America in the 18th and 19th centuries after it gained independence and before the end of the American Civil War.he United States was polarized over the issue of slavery, represented by the slave and free states divided by the MasonâDixon line, which separated free Pennsylvania from slave Maryland and Delaware.
In the East, Native Americans were recorded as slaves. Slavery in Indian Territory across the United States used slaves for many purposes from work in the plantations of the East, to guides across the wilderness, to work in deserts of the West, and to be soldiers in wars.Native American slaves suffered new European diseases, inhumane treatment, and death.lavery in Indian Territory across the United States used slaves for many purposes from work in the plantations of the East, to guides across the wilderness, to work in deserts of the West, and to be soldiers in wars. Native American slaves suffered new European diseases, inhumane treatment, and death.