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  2. Antimicrobial spectrum - Wikipedia

    en.wikipedia.org/wiki/Antimicrobial_spectrum

    Detailedly, broad-spectrum antibiotics can kill or inhibit a wide range of microorganisms; extended-spectrum antibiotic can kill or inhibit Gram positive bacteria and some Gram negative bacteria; narrow-spectrum antibiotic can only kill or inhibit limited species of bacteria. [1] [2] [3]

  3. 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.

  4. 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]

  5. Penicillin - Wikipedia

    en.wikipedia.org/wiki/Penicillin

    Later, a vial of 1,000,000 international units became standard, and this could contain 2.5 g to 3 g of natural penicillin (a mixture of penicillin I, II, III, and IV and natural impurities). With the advent of pure penicillin G preparations (a white crystalline powder), there is little reason to prescribe penicillin in units.

  6. Phenoxymethylpenicillin - Wikipedia

    en.wikipedia.org/wiki/Phenoxymethylpenicillin

    Phenoxymethylpenicillin, also known as penicillin V (PcV) and penicillin VK, is an antibiotic useful for the treatment of a number of bacterial infections. [2] Specifically it is used for the treatment of strep throat, otitis media, and cellulitis. [2] It is also used to prevent rheumatic fever and to prevent infections following removal of the ...

  7. Penicillin-binding proteins - Wikipedia

    en.wikipedia.org/wiki/Penicillin-binding_proteins

    Penicillin-binding proteins (PBPs) are a group of proteins that are characterized by their affinity for and binding of penicillin. They are a normal constituent of many bacteria; the name just reflects the way by which the protein was discovered. All β-lactam antibiotics (except for tabtoxinine-β-lactam, which inhibits glutamine synthetase ...

  8. Antibiotic - Wikipedia

    en.wikipedia.org/wiki/Antibiotic

    [1] [2] They may either kill or inhibit the growth of bacteria. A limited number of antibiotics also possess antiprotozoal activity. [3] [4] Antibiotics are not effective against viruses such as the ones which cause the common cold or influenza. [5] Drugs which inhibit growth of viruses are termed antiviral drugs or antivirals.

  9. Fusobacterium - Wikipedia

    en.wikipedia.org/wiki/Fusobacterium

    Fusobacterium is a genus of obligate anaerobic, Gram-negative, [2] non-sporeforming bacteria [3] belonging to Gracilicutes. Individual cells are slender, rod-shaped bacilli with pointed ends. [4] [5] Fusobacterium was discovered in 1900 by Courmont and Cade and is common in the flora of humans. [6] [7]

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