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severe combined immune deficiency

or severe combined immunodeficiency

noun, Pathology
1.
a group of rare congenital disorders in which both cell-mediated and humoral immunity are lacking, causing susceptibility to a wide variety of illnesses and an inability to live in a normal environment.
Abbreviation: SCID.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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