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Mongoloid is a term for certain asians. They share outward traits like epicanthic folds and fattier cheekbones for example. This caused people in the west to associate it with down-syndrome. After a while people realized the unfortunate implication and renamed the medical term âdown-syndromeâ instead.
The reaction between a particulate antigen and an antibody results in visible clumping called agglutination. Antibodies that produce such reactions are known as agglutinins. The principle of Agglutination reactions are similar to precipitation reactions; they depend on the cross linking of polyvalent antigens.