Er, symbol for the element erbium erbium [from Ytterby, a town in Sweden], metallic chemical element; symbol Er; at. no. 68; at. wt. 167.26; m.p. 1,529°C;; b.p. 2,863°C;; sp. gr. 9.05 at 25°C;; valence +3. Erbium is a soft, malleable, lustrous, silvery metal.
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endoplasmic reticulum (ER)

Membrane system within the cytoplasm of a eukaryotic cell (see eukaryote), important in the synthesis of proteins and lipids. The ER usually makes up more than half the membrane of the cell and is continuous with the outer membrane of the nuclear envelope (see nucleus). There are two distinct regions of ER: the rough ER, or RER (so called because of the protein-synthesizing ribosomes attached to it), and the smooth ER (SER), which is not associated with ribosomes and is involved in the synthesis of lipids and the detoxification of some toxic chemicals.

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No references found			error of the first kind error of the second kind error range error rate error ratio error recovery routine error report error routine error signal error sum of squares error tape error voltage Error, Measuring Device error-based testing error-checking code error-control procedures error-correcting code Error-Correcting Codes error-correcting telegraph system error-detecting code error-detecting system error-free channel error-indicating system errors and omissions insurance Errors, Theory of ERS Ersa Ersaryev, Orazgeldy Ersch, Johann Samuel Erse Ershov Ershov, Andrei Ershov, Andrei Petrovich Ershov, Iurii Ershov, Iurii Leonidovich Ershov, Ivan Ershov, Ivan Vasilevich Ershov, Petr Ershov, Petr Pavlovich Ershov, Vladimir Ershov, Vladimir Lvovich Ershov, Vladimir Stepanovich Ershova, Vera Ershova, Vera Aleksandrovna Erskine Caldwell Erskine, Ebenezer Erskine, John Erskine, Robert Erskine, Thomas Erskine, 1st Baron Erskine, Thomas, 1st Baron Erskine Erslev, Kristian			Errors of metabolism Errors to Emacs Errors, Theory of ERRP ERRR ERRRF ERRRIS errs errs errs errs errs errs on the right side errs on the right side errs on the right side errs on the side errs on the side errs on the side errs on the side of caution errs on the side of caution errs on the side of caution ERRSD ERRT ERRTS ERRUA Erructation ERRUS ERRV ERRVA ERRW ERS ERS-1 ERS-2 Ersa Ersa ERSAA ERSAC ERSADS ERSAL ERSAP ERSAQoS ERSARA Ersaryev, Orazgeldy ersatz ersatz Ersatz Elevator Ersatzteil Ersatzteilkatalog ERSB ERSC ERSCA Ersch, Johann Samuel ERSCP ERSD ERSDA ERSDAC ERSDB

Er (redirected from ERS)

endoplasmic reticulum (ER)

Er
(redirected from ERS)