 Lymphopoiesis is now usually used interchangeably with the term "lymphocytopoiesis" - the making of lymphocytes - but other sources may distinguish between the two, stating that "lymphopoiesis" additionally refers to creating lymphatic tissue, while "lymphocytopoiesis" refers only to the creation of cells in that tissue.It is rare now for lymphopoiesis to refer to the creation of lymphatic tissues.Myelopoiesis refers to 'generation of cells of the myeloid lineage' and erythropoiesis refers to 'generation of cells of the erythroid lineage' etc., so parallel usage has evolved in which lymphopoiesis refers to 'generation of cells of the lymphoid lineage'.