Center: Color mutants of Xanthophyllomyces dendrorhous. For the name and origin of the different streaks, see Fig. 2 in the article by EA Johnson, this issue, pp. 169–174, on “Phaffia rhodozyma: a colorful odyssey.” Photograph courtesy of Carlos Echavarri-Erasun. (The plate and the streaks are about their actual size.)

Upper left: Three-dimensional reconstruction of the Infectious Bursal Disease Virus (IBDV), from chicken, obtained by image processing from cryo-electron micrographs of purified virions. The resolution is 2.8 nm. Authors: José Ruiz Caston, Francisco Rodríguez and José L. Carrascosa, National Center for Biotechnology, CSIC-UAM, Madrid, Spain. (Magnification, ca. 1,300,000×)

Upper right: The bacterial community at the sediment–water interface of a stratified lake (Burke Lake, in the Rose Lake recreation area, near East Lansing, Michigan). Phase micrograph by Douglas E. Caldwell, University of Saskatchewan, Canada. (Magnification, ca. 1100×)

Lower left: The wood-digesting symbiotic protist Joenia annectens from the European dry wood-esting termite Kalotermes flavicollis. Phase contrast image by Michael Dolan, University of Massachusetts at Amherst, USA. (Magnification, ca. 3100×)

Lower right: Histoplasma capsulatum FMR6518. Mature macroconidium with club-shaped ornamentation. Scanning electron micrograph by J. Gené and M. J. Figueras, University Rovira Virgili, Reus, Spain. (Magnification, ca. 5300×)