Micropropagated Conference pear plantlets grown in solid Lepoivre-Quorin
medium. In vitro test culture tubes used for the study of bacterial
and fungal interactions. Courtesy of Emilio Montesinos, University
of Girona, Spain. See article by E. Montesinos, this issue, pp. 245–252,
on “Development, registration and commercialization of microbial
pesticides for plant protection”.
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×)
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×)
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×)