A juvenile root-knot nematode (Meloidogyne incognita) penetrates a tomato root on Jan. 24, 2013. Once inside, the juvenile, which also attacks cotton roots, causes a gall to form and robs the plant of nutrients Photo by William Wergin and Richard Sayre. Colorized by Stephen Ausmus.
Photo by William Wergin and Richard Sayre. Colorized by Stephen Ausmus. <a rel="nofollow" class="external text" href="https://www.flickr.com/people/41284017@N08">U.S. Department of Agriculture</a>
CC BY 2.0
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