Related Clues:
- Amorphous organism
- Bio 101 subject (Var.)
- One-celled organism (Var.)
- Amorphous critter
- Simple lab specimen (Var.)
- Organism frequently seen in 'The Far Side'
- Single-celled organism: var.
- Microscopic swimmer
- Microscope slide creature (Var.)
- Protozoa
- Minute creature
- Unicellular organism
- Tiny splitter
- One-celler
- Biology class topic