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inflammation of the lining of the bronchi and bronchiole causing them to become clogged with mucus.
two or more forms of a particular chemical element, that have the same number of protons in the...
secretory tissue in the leaves of plants that secretes water through pores in the epidermis or...
structure that contains the two centrioles arranged at right angles to each other in animal...
(also called secondary meristems) regions of cells capable of dividing to form new cells in the...