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Understanding antibiotic resistance
Understanding antibiotic resistance

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A schematic representation of how natural selection selects for antibiotic-resistant bacteria.
Figure 10 Natural selection for antibiotic resistance. When susceptible bacteria, shown in blue, are treated with antibiotics they all die. However, in the presence of antibiotics resistant bacteria, shown in green, survive and replicate by binary fission. This new bacterial population is now completely insensitive to treatment with the same antibiotic.

 3.2 Evolving resistance to antibiotics