| | Firefly flashes and Nitric Oxide |
 | | NADPH diaphorase activity (purple stain, a marker for NOS) is located at the center of each lantern rosette in the region around tracheal trunks. |
| | On the right are shown the flashes and flight paths of different species as they would appear in a time-lapse photograph (From: Lloyd, J. Univ. of Michigan Museum of Zoology, Misc. |
| | Nitric oxide (NO) is a soluble, highly reactive gas formed by natural chemical and physical reactions in the atmosphere. |
| ase.tufts.edu /biology/Firefly (746 words) |
