Related Clues:
- Single-celled organisms
- Lab slide objects, often
- Pseudopod formers
- They may be seen on slides
- Wee shape-shifters
- One-celled creatures
- Biology class captives
- Tiny creatures
- Real low life?
- One-celled protozoans
- Pond protozoans
- They're seen under slides
- One-celled organisms
- Single-celled critters
- School lab subjects