small world

Dr. Jennifer L. Peters & Dr. Michael R. Taylor /
The blood-brain barrier in a live zebrafish embryo (20x)
Arthur Strange / Acetaminophen crystals (20x) 
Dr. Michael John Bridge / Eye organ of a Drosophila fruit fly third-instar larvae (60x)
Dr. Somayeh Naghiloo / Floral primordia of Allium Sativum (Garlic)
Edy Kieser / Crystallized potassium chlorate (40x)
Yanping Wang / Sand (4x)
All photos from the Nikon Small World Photomicrography Competition.