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28.6 MB (2.8 MB compressed)
2606 x 3830 pixels
22.1 x 32.5 cm ⏐ 8.7 x 12.8 in (300dpi)
CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
False-colour transmission electron micrograph (TEM) of Bacillus subtilis bacteria undergoing a cellular division. Here, in this late phase of replication, the cell wall (at centre, pink) separating the two new sister cells has almost completely formed. A membranous structure is seen in each cell; bacteria do not contain a nucleus, and the DNA genetic material is scattered (gold on red). B. subtilis, or the Hay Bacillus, is an aerobic, rod-shaped, Gram-positive bacteria. It is sometimes pathogenic in humans, causing severe eye infections (iridocyclitis & panopthalmitis). Magnification: x7,400 at 6x7cm size.
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