Guess the Cover of American Laboratory—February 2013

Correctly identify this month’s cover image and be entered to win a $10 Amazon gift card (one entry per person; you must be 18 years of age to be eligible. See contest rules at

The image on this month’s cover was captured using scanning electron microscopy (SEM) imaging, original maginification 100×.

Just like snowflakes, no two are exactly alike.

What do you think it is? Enter by leaving your answer in the comments section below. Stay tuned for the answer and for next month’s cover image!