| International Harmonization of Rat Nomenclature |
| Recommendation | sources | ||
| WHO/IARC/RITA | NACAD | STP | |
| extramedullary hematopoiesis [erythrocytic; granulocytic; megakaryocytic] (N) | hyperplasia red pulp (hematopoiesis) | ||
| hyperplasia, lymphoid (N) | hyperplasia white pulp | ||
| histiocytosis (N) | focal lymphoid/histiocytic hyperplasia | ||
| plasmacytosis (N) | plasmacytosis | ||
| hyperplasia, stromal (H) | hyperplasia, stromal (H) |
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