B
chemical symbol, boron; Baumé scale; boils at; buccal.
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B blood group system
the major histocompatibility complex first identified in chicken red cells; responsible for most of the variation in graft survival time in that species.
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B cell
see B lymphocyte.
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B fibers
preganglionic, autonomic efferent nerve fibers with much slower conduction speeds than A cells.
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B immunoplasts
cells which gain access to Peyer’s patches, and establish populations of B lymphocytes, via permeable, postcapillary venules.
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B lymphocyte
see B lymphocyte.
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b-(g-l-glutamyl) aminopropionitrile
the form in which the toxin of lathyrism—?-aminopropionitrile—is found in plants.
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b.d.
[L.] bis die (twice a day). Called also b.i.d.
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b.i.d.
[L.] bis in die (twice a day). Called also bid.
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b.p.
boiling point.
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