DR. JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR. JEREMY BURGESS / SCIENCE PHOTO LIBRARY
Scanning electron micrograph of the soil bacteria Streptomyces lividans, a natural antibiotic producer (Streptomycin). Member of the Actinomycetes group, these bacteria share many characteristics with the fungi. They grow as a branching network of filaments (mycelium) in the soil & produce aerial mycelium, from the tips of which develop spore chains of indefinite length. A filament can be seen coiling upward just prior to spore formation. The spores form like beads on a necklace sometimes coiling into a spiral shape. When mature they rupture & are dispersed on the wind. Mag: X25,000 (at 10x8 inch size), X3570 (at 35mm size).
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