LC-PolScope Crane Fly Spermatocytes (image) Marine Biological Laboratory Caption These are spermatocytes from the crane fly, Nephrotoma suturalis. This image was generated using a Nikon Microphot SA equipped with a liquid crystal universal compensator, a so-called LC-PolScope (Cambridge Research and Instrumentation, Woburn MA). With the LC-PolScope, birefringence of meiotic spindles is revealed with striking contrast, regardless of specimen orientation, and thus, the spindle fibers, actually bundles of microtubules, are clearly imaged as bright structures on the non-birefringent (or weakly birefringent) background cytoplasm. Credit Rudolf Oldenbourg/MBL Usage Restrictions Please use with proper credit. 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.