Related Clues:

• Single-celled organism (var.)
• Major Hollywood music/performance store
• Single celled protozoan
• It has only one cell (Var.)
• Energy entering a crowd, a tiny shape-shifter
• Shape-shifter of interest to scientists
• Rather small swimmer
• Biology slide specimen
• One losing heart when taken in by a business graduate, low form of life
• Divisive creature
• Minute critter
• Microscopic specimen
• Tiny thing on a slide
• Tiny swimmer
• Little shape-shifter