Molecular Model of the Polymer Backbone Overlaid on an Image of a Section of C14DPPF-F (image) University of Warwick Share Print E-Mail Caption Molecular model of the polymer backbone overlaid on an image of a section of C14DPPF-F (C atoms are shown in grey, O in red, N in blue and H in white). The alkyl chains have been substituted with CH3 groups for better visualisation. An ABBA defect is visible in the centre of the image Credit University of Warwick Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.