Related Clues:
- Low life
- Single-celled swimmers
- Some protozoa
- Studies under a microscope
- They reproduce via mitosis
- Teensy critters
- Single things
- Single-celled creatures
- They've just one cell this morning, and zero at the new base
- Tiny lab subjects
- Images on some lab slides
- Slide subjects
- Single-celled animals
- Indivisible units
- Microscopic blobs