Figure 13-4. Diagram to show the locations of the principal lymph nodes, the spleen, and the thymus (From Dunn, 1954, courtesy of the author.)

Dunn, T.B. 1954. Normal and pathologic anatomy of the reticular tissue in laboratory mice, with a classification and discussion of neoplasms. J. Nat. Cancer Inst. 14: 1281-1434.
See also MGI.