Wheat Rust (Puccinia graminis)
Ergot on rye
Lichens
Ectomycorryzae of Pine
Paramecium with Endosymbiotic Chlorella Cells
Acacia with Structural Adaptations
for Symbiotic Ants
Aquatic Fern Azolla with Nitrogen
Fixing Cyanobacteria
Root Nodules with Nitrogen
Fixing Bacteria of Red Clover
Zooxanthellae in the Tissues
of Pancake Anemonoe
Cheek Cells with Mitochondria