How do two monosaccharides combine to form a disaccharide?

A monosaccharide is made of a 6-carbon cyclic ring. 5 out of the 6 form part of the ring while the other carbon acts as a side group of the 5’ carbon in the ring. When forming a disaccharide with the next monosaccharide, the OH of the 1’ C of one monomer undergoes a condensation reaction with the OH of the 5’ C of the next monomer. This results in the formation of a glycosidic bond and the loss of a water molecule.

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.