Background: Adult-derived bone marrow stem cells are capable of reconstituting the haematopoietic system. However there is ongoing debate in the literature as to whether bone marrow derived cells have the ability to populate other tissues and express tissue specific markers. The airway has been an organ of major interest and was one of the first where this was demonstrated. We have previously demonstrated that the mouse airway can be repopulated by side population bone marrow transplanted cells. Here we investigate the frequency and phenotypic nature of these bone marrow derived cells.
It has been reported that excretory-secretory (ES) material from the parasitic nematode Nippostrongylus brasiliensis has potential modulatory effects on the host's immune system. We observed that intratracheal instillation of ES from the L3 stage of the parasite reduced neutrophil numbers in LPS-induced inflammation as assessed by bronchoalveolar lavage.
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