The potato root nematode is a microscopic worm that thrives on the roots, thus causing the potato plants to wilt.

He lay for hours at a time on the floor of the cell, staring at minute moving things, small white ants, microscopic worms.

They are microscopic parasitic worms that attach themselves to the intestinal wall of terrestrial vertebrates, including man.

They're squeamish about storing a little box of nematodes - in this case, microscopic worms - next to the butter in the fridge.

D. dipsaci is a microscopic worm approximately 1.5 millimeters long.

Potato rot nematodes are microscopic worms approximately 1.4 millimetres long.

Entomopathogenic nematodes are microscopic worms that kill only insects.

Can it really require only a third more genes to design and operate a person than a microscopic worm?

Since 1989, Dr. Wall has been doing field work on microscopic worms that live in Antarctic soil.