Abstract：
:Affinity of lymphoid cells for the microenvironment of germinal centers (GC), as detectable in transfer experiments by rapid homing in spleen GC from the blood, is a capacity expressed by only a subset of lymphoid cells, in particular by those constituting a GC. However, when introduced into the blood stream, these cells do not home into GC of lymph nodes and gut-associated lymphoid tissues. To investigate further this homing inability for high endothelial venule (HEV)-containing lymphoid tissues, GC cells isolated from donor rabbit appendix were labeled in vitro with 3H-leucine and injected into an afferent lymph vessel of recipient popliteal lymph nodes. Draining lymph nodes were removed 15 min to 24 h after cell administration and prepared for radioautography. For reference, the migration of cells isolated from Peyer's patches and thoracic duct lymph was also studied. By use of appendix GC cells, large numbers of labeled cells were found to migrate into GCs of the outer cortex centripetally, i.e., from the subcapsular sinus through the lymphocyte corona into the GC proper. The same was observed for cells from Peyer's patches, although in smaller numbers. Thoracic duct lymphocytes were only localized in the lymphocyte corona and the deep cortex. Thus, appendix GC cells and a subpopulation of cells from Peyer's patches can reach lymph node GC, but only when administered intralymphatically.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Deenen GJ,Opstelten D,Nieuwenhuis Pdoi
10.1007/BF00215160subject
Has Abstractpub_date
1984-01-01 00:00:00pages
183-9issue
1eissn
0302-766Xissn
1432-0878journal_volume
238pub_type
杂志文章abstract：:During pregnancy, the calcium (Ca(2+)) transport machinery of the placenta is solely responsible for the nutrient supply to the developing fetus, where active Ca(2+) transport occurs from the mother to the fetus. As part of a larger study to determine the role of Ca(2+) in placental transport in vivo, we questioned wh...
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journal_title：Cell and tissue research
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