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Cells
Stained kidney tissue. The kidney is an essential organ responsible for disposing wastes from the body and for maintaining healthy ion levels in the blood. It also secretes two hormones, erythropoietin (EPO) and calcitriol (a derivative of vitamin D), into the blood. It works like a purifier by pulling break-down products of metabolism, such as urea and ammonium, from the blood stream for excretion in urine. Related to image 3725.
Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR)
Tom Deerinck and Mark Ellisman, National Center for Microscopy and Imaging Research
Photograph
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