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the inner most layer of the cortex of roots and some stems of plants.
a hormone that causes the secretion of gastric juices into the stomach.
a pure substance made of only one type of atom. An element cannot be broken down into simpler...
a small finger-like projection found on the inner folds of the small intestine, which increases...
the inner region of the kidney, striped in appearance, made up of renal pyramids.