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. 1981 Sep;44(1):125–133.

The sequence of changes in blood flow and lymphocyte influx to stimulated rat lymph nodes.

M T Drayson, M E Smith, W L Ford
PMCID: PMC1555108  PMID: 7275180

Abstract

The rat popliteal lymph node was studied from 1 hr to 8 days after the footpad injection of either sheep erythrocytes or syngeneic rat erythrocytes. The following were measured relative to the contralateral (unstimulated) lymph node: (i) blood flow; (ii) lymph node weight; (iii) influx of lymphocytes from the blood; (iv) [3H]-thymidine incorporation; (v) [35S]-sulphate incorporation into macromolecular form (chiefly by high endothelial venules). After the arrival of sheep erythrocytes all five quantities showed substantial increases which began in a definite sequence. The blood flow started to rise first and may have been the main factor contributing to the later increase in lymphocyte influx. Increased sulphate incorporation began later than the rise in lymphocyte influx. After the injection of rat erythrocytes a small increase in lymphocyte influx was found without a corresponding increase in blood flow. In rats irradiated before the footpad injections lymphocyte influx increased three-fold after sheep erythrocytes, rat erythrocytes or PBS, again without a corresponding increase in blood flow. Thus while variation in blood flow to high endothelial venules is one important factor in determining the supply of lymphocytes to the lymph node other factors are operative in certain situations.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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