Rotary-shadowed electron micrograph of chaperonin immobilized onto the coverslip surface.

(A) With immobilized chaperonin. The boxed area in the upper panel is enlarged in the lower panel. The particles comprise almost exclusively ring-shaped end-on views (black arrowheads). The white arrowhead indicates a cluster of glycerol. (B) Without immobilized chaperonin. The scale bars represent 100 nm.