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A cell that is a precursor of a plasma cell and develops from an activated B cell.
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Noun1.plasmablast - the precursor of a plasma cell
plasma cell, plasmacyte - a cell that develops from a B lymphocyte in reaction to a specific antigen; found in bone marrow and sometimes in the blood
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Plasma cell population predominantly comprised of plasmablast, intermediate plasma cells and few mature forms.
IgG4-related disease affects multiple organ systems and is characterized by the distinct microscopic appearance of diseased organs, including the presence of IgG4-positive plasmablast cells that is required for diagnosis.
Focal clusters of these plasmablasts encroached on the germinal centers, forming so-called microlymphomas (Figure 1b).