50.0 MB (4.2 MB compressed)
5120 x 3413 pixels
43.4 x 29.0 cm ⏐ 17.1 x 11.4 in (300dpi)
KATERYNA KON / SCIENCE PHOTO LIBRARY KATERYNA KON / SCIENCE PHOTO LIBRARY
Mycoplasma bacteria, computer illustration. Mycoplasmas are the smallest cellular organisms known (diameter 0.3-0.9 microns). They resemble bacteria in some respects (some authorities regard them as primitive bacteria), but they differ in that they lack a true cell wall and hence display a variety of forms. They may be spherical, branched or unbranched filaments. Some species are pathogens of humans and animals (cattle, sheep) living on the moist mucosal membranes. In humans Mycoplasma hominis may infect the genital tract, while Mycoplasma pneumoniae causes a pneumonia-like disease of the lungs.
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