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Ultrastructure of activated lymphocyte (plasmablast) in intimate contact with the fibroblast in the liver of Schistosoma mansoni–infected mouse treated with BDHQ. The plasmablast shows a round and small eccentric nucleus in relation to the cell size. The cytoplasm is filled with dilated endoplasmic reticulum (ER) and a few remaining free ribosomes (R). (X 5000)
