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Close-up of root-knot nematode
The fingerprint-like structures on this female root knot nematode help scientists to identify it. (Image courtesy ARS Nematology Lab, D3603-1)
Two ARS scientists examining slides of nematodes
ARS nematologist David Chitwood (left) and microbiologist Zafar Handoo examine some of the nearly 50,000 slides and vials in the USDA Nematode Collection. (Stephen Ausmus, D3602-1)
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