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Arabinogalactan-proteins (AGPs) are a class of proteoglycans found in cell secretions and plasma membranes of plants. Attention is currently focused on their structure and their potential role in growth and development. We present evidence that two members of a major class of AGPs, the classical AGPs, AGPNa1 from styles of Nicotiana alata and AGPPc1 from(More)
Arabinogalactan proteins (AGPs) are proteoglycans secreted by plant cells that have been implicated in plant growth and development. Most AGPs cloned to date possess highly labile glycosylphosphatidylinositol (GPI) lipid anchors. These anchors transiently attach AGPs to the plasma membrane before they are released into the cell wall following GPI anchor(More)
mediated by activated macrophages or monocytes. Upon pathogenic invasion, macrophages play a central role in producing soluble factors such as proinflammatory cytokines (e.g., interleukin-1 and tumor necrosis factor-a) or inflammatory mediators [nitric oxide (NO) and prostaglandin E2 (PGE2)] to boost initial defenses. Although this immune mechanism is a(More)
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