Japanese Journal of Veterinary Research;Volume 12, Number 4

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THE LYMPH SYSTEM IN MICE

KAWASHIMA, Yoshitsugu;SUGIMURA, Makoto;HWANG, Yann-Ching;KUDO, Norio

Permalink : http://hdl.handle.net/2115/1797
JaLCDOI : 10.14943/jjvr.12.4.69

Abstract

The present study was undertaken in an effort to clarify the location and number of the lymph nodes, and their draining areas in mice. The results may be summarized as follows : 1. There are 13 lymphocenters (mandibular, deep cervical, axillary, mediastinal, bronchial, coeliac, cranial mesenteric, caudal mesenteric, iliac, lumbar, sacral, subiliac and popliteal) which are comprised of 16 groups of lymph nodes. 2. 14 of these groups are always present, but in mice of the dd strain, the gastric and bronchial nodes are not always present. In mice of the NIH strain the gastric node is always present, but the bronchial node is not observed. 3. The number of lymph nodes is smaller in mice than in domestic and other laboratory animals. Some of the courses of the lymph vessels in mice are fairly similar to those in reptiles. This may indicate that the mouse lymph system is primitive. 4. The concept of "lymphocenters" seems to be accepted and useful, but the division and nomenclature should be reinvestigated from the standpoint of phylogeny, especially in the lower mammals in which all of the 20 lymphocenters do not develop.

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