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Mechanisms regulating the appearance of sIgE+ B lymphocytes appear to be lacking in adult germfree (GF) rats in that their Peyer's patches (PP) contain high numbers of cells with sIgE (approximately(More)
Abstract Chemically pure preparations of three structurally unrelated components of the cell wall of gram-negative bacteria (BCWC), lipid A, outer-membrane lipoprotein, and murein, were tested for(More)