What tiny structures in our cells can tell us about our genes Play03:06 Download Audio Embed on your website Close× Copy the code below to embed the WBUR audio player on your site <iframe width="100%" height="124" scrolling="no" frameborder="no" src="https://player.wbur.org/hereandnow/2026/05/18/speckles-genes"></iframe> Copy embed code Tiny structures in cells called speckles were first discovered more than a century ago. Joe Palca tells us why biologists have a renewed interest in them.