单词	IgA
释义	IgA noun ˌī-(ˌ)jē-ˈā  1 : a class of immunoglobulins including antibodies found in external bodily secretions (such as saliva, tears, and sweat) 2 : an antibody of the class IgA Word History Etymology immunoglobulin First Known Use 1969, in the meaning defined at sense 1 Medical Definition IgA noun ˌī-ˌjē-ˈā  1 : a class of immunoglobulins that include antibodies found in external bodily secretions (as saliva, tears, and sweat) 2 : an immunoglobulin of the class IgA
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