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a large tongue-shaped organ in the mammalian body which secretes hormones and digestive enzymes.
the space in the middle of the tooth which contains cells, blood vessels and a nerve.
processes used to create copies of DNA fragments (usually genes), cells or organisms to create...
the outermost layer of the stele or vascular cylinder in a dicotyledonous plant root. Lateral...
(also called lithospheric plates) massive, irregularly shaped slabs of solid rock.
a substance, usually a liquid, in which other substances can dissolve.