Cover photograph (Copyright © 2002, American Society for Microbiology. All Rights Reserved.): Imprint of a clover leaf on a methanol mineral salts plate. The plate was incubated at 30
C for 2 days to allow outgrowth of the pink-pigmented Methylobacterium strains present on the leaf surface. (Photo courtesy of Amy Springer and Mary Lidstrom.) (See related article on page 1818; see also related article on page 1832.)
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