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This mystery photo was taken by Rachel Fink (Department of Biology) on a laser scanning confocal microscope, and is one of her very favorite images.

The following hints might help you figure out what it is. Answers are posted on the answer page (link below).

* This mystery structure was ALIVE at the time of the photo.

* This image was taken through a microscope, and represents a very, very tiny portion of the whole organism.

* In real life, the field of view is approximately 100 micrometers across.

* The organism had been stained with a special fluorescent lipid (= fat).

* The lipid was very selective, and only stained a very special part of the organism.

* The very special part is something that every introductory biology student "meets" in her high school class, when learning about "The Cell".

Answer Page