This intriguing finding needs verification in independent studies, but may indicate that particular 'preferred' osteoblast-rich niche areas are present within the metaphysis.
Such driving forces of evolution are lacking in sebaceous follicles; it has been found that only very few organisms can colonize this lipid-rich niche.
(6) Moreover, tumor cells may use CXCR4 to access the SDF-1-rich niche microenvironment to favor their survival and resistance to chemotherapy.
Given the potential of MAB to form granulomatous lesions [ 63, 64], it is likely that the secretion of these chemokines could help to create an early pro-inflammatory cell-rich niche in vivo, which facilitates the clearance of the bacilli.
Since stem cells reside in the HA-rich niche, synthesize HA, express it on the surface and are able to internalize it [ 55- 59], clearly conditions exist that allow HA to provide protection of DNA against oxidants.
Are these resources providing a rich foraging niche for winter active bumblebees?
In lactic acid bacteria, adaptation to the rich dairy niche is associated with gene decay, leading to metabolic simplification and auxotrophy.
To test if urban areas in the UK provide a rich foraging niche for bees we set up colonies of B. terrestris in the field during two late winter periods (2005/6 & 2006/7) in London, UK, and measured their foraging performance.
bulgaricus and L. helveticus genomes, suggesting their adaptation to the protein rich dairy niche (van de Guchte et al. 2006; Callanan et al. 2008).
For several LAB species, these events involved a shift in primary habitat from dynamic and nutritionally variable environments, such as the human gastrointestinal tract and plant materials, to the relatively constant and nutrient-rich dairy niche.
