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simple epithelium with flattened cells found in the inner lining of the mouth, oesophagus and blood vessels and alveoli of the lungs.
foods produced from genetically modified organisms.
a gland which secretes substances, usually enzymes, through a duct directly to the part of the...
the forming new plants asexually (without the production of seeds or spores).
the first part of the mammalian small intestine.
a condition that develops when a person has an unbalanced diet.