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Different cleaning and silanization methods have been applied to bioactive glasses with the aim of covalently bonding bone morphogenetic proteins (BMP-2) to the surface. Several glasses, with different bioactivity index, were cleaned with acidic, basic, or neutral aqueous media to investigate the role of pH in the formation of silanols on glass surfaces of(More)
BACKGROUND AND AIMS Salt tolerance has evolved many times independently in different plant groups. One possible explanation for this pattern is that it builds upon a general suite of stress-tolerance traits. If this is the case, then we might expect a correlation between salt tolerance and other tolerances to different environmental stresses. This(More)
Bennett et al. [1] present the phylogenetic distribution of salt-tolerant species on a phylogeny of 2684 grasses in the context of plant breeding for salt-tolerance. Salt-tolerance, they conclude, is an evolutionary labile trait that has evolved a number of times across many lineages; this is at odds with the record of difficulty in breeding salt-tolerant(More)
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