Figures 282 (upper) and 283 (lower) from Chapter 9 (Peroxisomes) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Examples longitudinal, or transverse sections through peroxisomes from rat liver hepatocytes reveal the lattice of the urate oxidase crystal contained within the peroxisome. Upper image by Daniel Friend; lower panel by Richard Wood. A PDF copy of the accompanying chapter is available on the ASCB's BioEDUCATE website.