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  2. Antimicrobial spectrum - Wikipedia

    en.wikipedia.org/wiki/Antimicrobial_spectrum

    The antimicrobial spectrum of an antibiotic can be determined by testing its antimicrobial activity against a wide range of microbes in vitro. Nonetheless, the range of microorganisms which an antibiotic can kill or inhibit in vivo may not always be the same as the antimicrobial spectrum based on data collected in vitro. [2] [5]

  3. Broad-spectrum antibiotic - Wikipedia

    en.wikipedia.org/wiki/Broad-spectrum_antibiotic

    A colored electron microscopy image of methicillin-resistant staphylococcus aureus (), a bacterium commonly targeted by broad-spectrum antibioticsA broad-spectrum antibiotic is an antibiotic that acts on the two major bacterial groups, Gram-positive and Gram-negative, [1] or any antibiotic that acts against a wide range of disease-causing bacteria. [2]

  4. Cephalosporin - Wikipedia

    en.wikipedia.org/wiki/Cephalosporin

    Gram-negative: Third-generation cephalosporins have a broad spectrum of activity and further increased activity against gram-negative organisms. They may be particularly useful in treating hospital-acquired infections, although increasing levels of extended-spectrum beta-lactamases are reducing the clinical utility of this class of antibiotics.

  5. List of antibiotics - Wikipedia

    en.wikipedia.org/wiki/List_of_antibiotics

    The following is a list of antibiotics. The highest division between antibiotics is bactericidal and bacteriostatic . Bactericidals kill bacteria directly, whereas bacteriostatics prevent them from dividing.

  6. Tetracycline antibiotics - Wikipedia

    en.wikipedia.org/wiki/Tetracycline_antibiotics

    This allows for an expanded spectrum of activity and decreased susceptibility to the development of resistance. [48] While tigecycline was the first tetracycline approved in over 20 years, other, newer versions of tetracyclines are currently in human clinical trials.

  7. β-Lactam antibiotic - Wikipedia

    en.wikipedia.org/wiki/Β-Lactam_antibiotic

    β-Lactam antibiotics are indicated for the prevention and treatment of bacterial infections caused by susceptible organisms. At first, β-lactam antibiotics were mainly active only against gram-positive bacteria, yet the recent development of broad-spectrum β-lactam antibiotics active against various gram-negative organisms has increased their usefulness.

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  9. Tetracycline - Wikipedia

    en.wikipedia.org/wiki/Tetracycline

    Tetracyclines have a broad spectrum of antibiotic action. Originally, they possessed some level of bacteriostatic activity against almost all medically relevant aerobic and anaerobic bacterial genera, both Gram-positive and Gram-negative, with a few exceptions, such as Pseudomonas aeruginosa and Proteus spp., which display intrinsic resistance.

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