Antibodies are host proteins that are produced by the immune system in response to foreign molecules that enter the body. These foreign molecules are called antigens, and their molecular recognition by the immune system results in selective production of antibodies that are able to bind the specific antigen.his ability of animal immune systems to produce antibodies capable of binding specifically to antigens can be harnessed to manufacture probes for detection of molecules of interest in a variety of research and diagnostic applications.
Slavery took place in many places including the Southern states in the U.S. in the 1800's and before that. Slavery has taken place since human beings stopped being hunter-gatherers.
Slavery started in what is now the United States in 1619. In that year, a load of slaves was dropped off in Jamestown, the first settlement in what is now the United States. Slavery would continue to exist in the United States until the end of the Civil War, which was in 1865.Slavery came to exist mainly because there was a serious need for labor in the South.he first african slaves were brought over on August 20th, 1619, and slavery wasn't abolished until December 6, 1865 when the thirteenth amendment was passed, I wouldn't say that's exactly when slavery ended but that is the timeline. meaning slavery lasted for 246 years.