Related Clues:

• "The Far Side" organism
• Protozoa genus
• Simple creature
• Microscopic swimmer (var.)
• Microscopic animal found in water
• One of the little things in life?
• Organism that splits
• In old Rome I love retiring president, a low form of life
• Lab slide creature
• Its genome is 100 times larger than humans'
• Organism once called a Proteus animalcule
• Protozoa with pseudopodia (var.)
• Unicellular living thing
• Slide specimen (var.)
• Thing seen on a lab slide