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.
The abolition of slavery occurred at different times in different countries, and sometimes occurred sequentially in more than one stage: for example, as abolition of the trade in slaves in a specific country, and then as abolition of slavery throughout empires. 1873: Slavery abolished in the Spanish colony of Puerto Rico: March 22. 2  1873: Treaty between Britain and Zanzibar and Madagascar to suppress slave trade. 3  1874: Britain abolishes slavery in the Gold Coast (now Ghana), following its annexation in 1874. 4  1877: Slavery had been abolished in Egypt in August 1877.