300 dpi: (k7453-13.jpg)
640 pixels wide: (k7453-13.jpg)
 Image Number K7453-13 |
Although the drop of ice-nucleating bacteria placed on one rhododendron leaf (white dot) froze, this infrared image shows that freezing in the detached, terminal shoot began in the stem and moved out into leaves and buds.
Photo by Keith Weller
