Nature Publishing Group uses CrossCheck to check articles at the Accepted In Principle stage across 83 journals. CrossCheck checks take between 3 minutes to 1 hour to complete. Nature has educated authors and staff on CrossCheck through their policy pages and author guides. CrossCheck integrates with Nature's tracking systems. While no pure cases of plagiarism have been found, Nature has found missing citations and copied references. Nature requests enhancements to CrossCheck like improved help files and the ability to export reports.