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small pieces of the parent plant grown in plant-tissue culture.
a complex organic substance needed by the body in small amounts for normal growth and...
neurons that have more than two outgrowths from the cell body.
regions or bundles of vascular tissue consisting of xylem and phloem separated by cambium.
a heart chamber that pumps blood from the heart to the body or lungs.
(also called physical digestion) the breaking down of food into smaller pieces using mechanical...