choice. This image is a derivative work of the following images: File:Helix_diagram-de.png licensed with Cc-by-sa-2.5,2.0,1.0, Cc-by-sa-3.0-migrated, GFDL...
choice. This image is a derivative work of the following images: File:Helix_diagram.png licensed with Cc-by-sa-2.5,2.0,1.0, Cc-by-sa-3.0-migrated, GFDL 2006-06-06T09:56:15Z...
Richardson JS, and Richardson DC. 1990 (1990). "De novo design, expression, and characterization of Felix: a 4-helix bundle protein of native-like sequence"....
DescriptionTriod-english-text.png English: Cutaway drawing showing the construction of a low power triode vacuum tube. The triode, invented in 1906 by Lee De Forest, was...
electric current from the cathode to the plate. The grid is a screen or helix of wires between cathode and plate. The electrons have to pass through the...
