Assertion: immunoglobulin's structure | /r/Synonym | alpha
Facets:
value: into five classes
type: OTHER
Source sentences:
text: They are divided according to the primary structure of their respective heavy chains, called gamma, mu, alpha, delta and epsilon, into five classes: IgG, IgM, IgA, IgD and IgE. Human IgG can be subdivided into four subclasses, IgG 1 , etc., whilst IgA has two subclasses.