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All tests were two-tailed, and P-values? http://www.selleckchem.com/products/Cisplatin.html to AR and NC http://www.selleck.cn/products/ve-821.html (Table?1, Fig.?1). ��4-GLT, ��-mRNA, and RAG2 mRNA were also significantly increased in NP compared to NC, while RAG1 was borderline significant. We observed lesser increases in AID and B lymphocyte�Cinduced maturation protein (BLIMP) in NP compared to NC. Both BAFF and BLIMP are involved in the differentiation of B cells into plasma cells [28, 29]. By gel electrophoresis and Southern blotting, we could demonstrate the presence of the I��-C�� switch circle transcripts in three separate pieces of one polyp (Fig.?S1). The identity of this cDNA was confirmed by sequencing the 339-bp band in the gel (results not shown). The http://www.selleckchem.com/products/Vorinostat-saha.html negative result in the second polyp may be due to the loss of the transient transcripts that were synthesized at earlier time points or a different source of IgE in this polyp. Germinal center-like structures were observed in one of eight of the NP (Fig.?2A). Within these GC-like structures, B cells and plasma cells were assessed as the predominant cell types. Examples of single cell imaging showing the localization of IgE in B cells and plasma cells are shown in Fig.?2B,C, respectively. The numbers of all cells expressing RAG1 and RAG2 individually and expressing both proteins (RAG1 and RAG2) were significantly greater in NP compared to AR and NC, and the number of cells expressing both proteins was increased slightly in AR compared to NC, as shown in Fig.?3A�CC. The numbers of RAG1- and RAG2-expressing CD20+ B cells, CD138+ plasma cells, and CD3+ T cells were significantly greater for NP compared to AR and NC as shown in Fig.?3D�CI. The total number of B and plasma cells in NP is increased compared to AR and NC, as well as the ratio of plasma cells to B cells (Table?2). The percentages of cells co-expressing RAG1 and RAG2 of all studied lymphocytes (B, T, and plasma cells) were greater for NP compared to AR and NC and for AR compared to NC.