Click on the stack of squares on the leftmost part of the screen to open up confocal block and stack images.

Use your mouse or the plus (+) and minus (-) signs on the bottom right-hand corner to zoom in and out of images.

After viewing the images, scroll down to answer the quiz.

The NIDI Teaching Portal will be available from 12:00 PM to 12:00 AM Eastern Time (New York) on weekdays only.