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a life-threatening condition caused by a lack of insulin.
the structure that separates the right ventricle from the pulmonary artery. It prevents the...
specialised cells which secrete mucus, usually found together with columnar epithelium and...
regions or bundles of vascular tissue consisting of xylem and phloem separated by cambium.
simple epithelium with elongated, cells that lines the stomach, small intestine, urethra, vas...