Guess the Cover of American Laboratory June/July 2012 and win a $10 Amazon gift card

Identify this month’s cover image and be entered to win a $10 Amazon gift card (no purchase necessary; one entry per person; you must be 18 years of age to be eligible. See complete contest rules at

This month’s cover image tests your knowledge of popular vacation destinations around the world. This photomicrograph was taken using an Olympus SZX10 stereomicroscope with external fiber optic oblique illumination. Original magnification, 19×.

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!