Cytoplasmic Immunoglobulin

**Semantic type:** Amino Acid, Peptide, or Protein|Immunologic Factor

**Definition:** Immunoglobulins found within intact cells. The proportion of cells expressing cytoplasmic immunoglobulin can be a diagnostic criterion in B-cell lymphoproliferative disorders.

**Synonyms:** - CyIg - Cytoplasmic Ig - Immunoglobulin, Cytoplasmic - cIg