Pathophysiology. The reason for the monoclonal expansion of a single Ig-secreting plasma cell population in what appears to be a nonmalignant manner is unknown in most cases. Most cases involve IgG or IgA monoclonal cell populations. About 15-20% are composed of IgM monoclonal cells. Kyle et al reported that the cells in IgG and IgA MGUS arise from a mature, somatically mutated, postswitch plasma cell. About 50% of cases have evidence of translocation in the Ig heavy-chain region at 14q32.
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Ollas (pronounced âoy-yahsâ) are unglazed clay/terra-cotta pots with a bottle or tapered shape that are buried in the ground with the top/neck exposed above the soil surface and filled with water for sub-surface irrigation of plants.llas in Sri Lanka Photo copyright Â© Craig Mackintosh. âMaria created her highly prized black pots by using the bottom of an old plate (puki)â¦ Beginning by patting a tortilla shaped piece of clay in the puki, Maria then rolled a lump of clay between her palms, creating a long clay rope of uniform thickness.