Related Clues:
- Microscopist's sighting (Var.)
- Amorphous organism
- Lab-slide subject
- Simple animal
- Bio 101 subject (Var.)
- One-celled organism (Var.)
- Tiny blob
- Amorphous critter
- Microscopic animal
- Simple lab specimen (Var.)
- Organism frequently seen in 'The Far Side'
- The simple life?
- Bio lab subject
- Low life form
- Single-celled organism: var.