Lymphoma and plasma cell neoplasms
Lymph nodes
Normal lymphocyte development - General

Author: Nikhil Sangle, M.D. (see Authors page)

Revised: 3 April 2017, last major update December 2010

Copyright: (c) 2001-2017, PathologyOutlines.com, Inc.

PubMed Search: lymphocyte development

Cite this page: Normal lymphocyte development - General. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/lymphomanormal.html. Accessed April 28th, 2017.
Definition / general
  • Normal lymphoid cells undergo rearrangements within their antigen receptor genes, causing specificity for the immunoglobulin or T cell receptor that they produce
  • Monoclonal proliferations are presumed to be neoplastic; polyclonal populations are not neoplastic
  • Apoptosis helps eliminate B cells producing antibodies with low avidity
Pluripotent Hematopoietic Cell / Stem Cell
  • All hematopoietic cells, including lymphocytes, arise from a single pluripotent hematopoietic cell, which has properties of self renewal and potency (Wikipedia)
  • Self renewal: the ability to go through numerous cycles of cell division while maintaining the undifferentiated state
  • Potency: the capacity to differentiate into specialized cell types (cells of erythroid, megakaryocytic, myeloid and lymphoid lineages)
  • Upon transplantation, can home back to appropriate sites in the bone marrow with retention of above properties
  • Lymphoid stem cells are TdT+, CD34+, HLA-DR+
Diagrams / tables

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Hematopoiesis diagrams