27.9 MB (4.1 MB compressed)
2550 x 3830 pixels
21.6 x 32.5 cm ⏐ 8.5 x 12.8 in (300dpi)
LEONARD LESSIN / SCIENCE PHOTO LIBRARY LEONARD LESSIN / SCIENCE PHOTO LIBRARY
This tree has been infected with Agrobacterium tumefaciens, the causal agent of Crown Gall disease, which forms tumors in many different plant species.
Model release not required. Property release not required.