Definition of "plasma cell" []

• Any of the antibody-secreting cells found in lymphoid tissue and derived from B cells upon lymphokine stimulation and reaction with a specific antigen. Also called plasmacyte. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "There was an acute parenchymatous nephritis with focal plasma cell infiltrations suggesting acute interstitial nephritis."