When Oliveira and colleagues looked at the leaves under an electron microscope, they noticed tiny roundworms called nematodes sitting on the leaves (inset image). (sciencemag.org)
Each spring, tiny roundworms hatch and wriggle over to the nearest soybean root to feed. (sciencedaily.com)
Around that time, I took a course on model organisms and fell in love with the tiny roundworm C. elegans. (sciencemag.org)