The glomeruli filter fluid from your blood, extracting both waste products and substances your body needs — sodium, phosphorus and potassium.
肾小球过滤血液，从中摄取代谢废物和各种身体所需物质——钠、磷和钾（译者：离子？）
The green sphere depicts potassium ions in the selectivity filter.
绿球暗示位于这个选择性浪子通道中的钾浪子。
The green sphere depicts potassium ions in the selectivity filter.
绿球暗示位于这个选择性浪子通道中的钾浪子。
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