Model, Urinary System, 3D (Each) Polydron easy way to roll dice

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Model, Urinary System, 3D (Each) Polydron easy way to roll diceUrinary System Model A larger than life size 3D model of the human excretory organs. Allowing students full access from all sides. Made from unbreakable vinyl, the model is free standing. Both kidneys, with their piggyback adrenal glands, major blood vessels, uretors and upper half of the bladder, are included all in their natural relationship to each other. One kidney is sectioned to show the network of filtration and collection tunnels. Major