Photo Quiz: Puzzles in Purple
To make naturally colorless biological structures easier to study, scientists often use fluorescent tags and other tools to color them. Here, we feature images with purple hues and pair them with questions to test your knowledge of basic science concepts.
Visit our image and video gallery for more scientific photos, illustrations, and videos in all the colors of the rainbow.

This post is a great supplement to Pathways: The Imaging Issue.
The images in this post were captured using some of the techniques described in Pathways.
Learn more in our Educator's Corner.