English: These cystine crystals were found in the urine sediment of a male dog who presented to the veterinary hospital with a history of chronic stranguria (straining to urinate) and pollakiuria (abnormally increased frequency of urination). A cystotomy was performed and numerous cystoliths (bladder stones) were removed. 5μm scale bar; 1,000x magnification; focus-stacked image consisting of 12 exposures; courtesy of Lance Wheeler.
This image was taken and processed by Lance R Wheeler. This image was originally published on Flickr on August 17, 2018. To see additional images, visit Lance's Flickr Photostream: https://www.flickr.com/photos/146435388@N03/