in Excretory Products and their Elimination (Urinary System) by

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During the process of Ultra filtration water, nitrogenous wastes, ions, salts, nutrients and other low molecular weight substances are filtered out while high molecular weight substance like proteins and blood cells are retained back. The filtrate is called Glomerular filtrate. It is also called as deproteinized plasma or primary urine. It has the same composition as that of blood, except that it does not contain blood cells and proteins.
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