![](http://www.alamy.com/thumbs/6/E38362B5-C2F1-4F11-BAAB-7B10FF835FC8/2BE2499.jpg)
Pine tree trunk across 100x
Size: 5616px × 3744px
Photo credit: © Norbert Dr. Lange / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: annual, blue, cells, conifer, conifers, enlargement, forlen, glass, histology, macro, magnification, magnifying, microscopy, pine, pinus, plants, red, research, rings, rot, science, small, stem, tiny, tissue, trunk