= Smooth endoplasmic reticulum
= SER
{c}
{synonym}
<Smooth endoplasmic reticulum> lacks attached <ribosomes>. Specialized regions support <lipid> <metabolism> and processing of foreign compounds; the <endoplasmic reticulum> also stores and releases <calcium> <ions>. Regional specialization does not split the network into two separate <organelles>, nor make every smooth region perform every function.<Molecular Biology of the Cell, 4th edition by Bruce Alberts and others/The Endoplasmic Reticulum>[Molecular Biology of the Cell, 4th edition by Bruce Alberts and others; Smooth ER Is Abundant in Some Specialized Cells, Figures 12-38A and 12-38B and calcium-storage paragraphs]{ref}
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