macroglobulin

noun immunol
  1. an immunoglobulin of unusually high relative molecular mass, observed in the blood in some diseases
  2. Also called: immunoglobulin M the normal form of this immunoglobulin
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macroglobulin in Medicine

macroglobulin

[măk′rō-glŏbyə-lĭn]
n.
  1. A plasma globulin of high molecular weight.
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