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2. List of β-lactam antibiotics - Wikipedia

   en.wikipedia.org/wiki/List_of_β-lactam_antibiotics

   The β-lactam core structures. (A) A penam.(B) A carbapenam.(C) An oxapenam.(D) A penem.(E) A carbapenem.(F) A monobactam.(G) A cephem.(H) A carbacephem.(I) An oxacephem. This is a list of common β-lactam antibiotics—both administered drugs and those not in clinical use—organized by structural class.

3. Beta decay - Wikipedia

   en.wikipedia.org/wiki/Beta_decay

   The two types of beta decay are known as beta minus and beta plus. In beta minus (β − ) decay, a neutron is converted to a proton, and the process creates an electron and an electron antineutrino ; while in beta plus (β + ) decay, a proton is converted to a neutron and the process creates a positron and an electron neutrino. β + decay is ...

4. Cefalexin - Wikipedia

   en.wikipedia.org/wiki/Cefalexin

   Cefalexin, also spelled cephalexin, is an antibiotic that can treat a number of bacterial infections. [4] It kills gram-positive and some gram-negative bacteria by disrupting the growth of the bacterial cell wall. [4] Cefalexin is a β-lactam antibiotic within the class of first-generation cephalosporins. [4]

5. Beta-lactam antibiotics - Wikipedia

   en.wikipedia.org/wiki/Beta-lactam_antibiotics

   β-lactam antibiotics (beta-lactam antibiotics) are antibiotics that contain a beta-lactam ring in their chemical structure. This includes penicillin derivatives , cephalosporins and cephamycins , monobactams, carbapenems and carbacephems.

6. Positron emission - Wikipedia

   en.wikipedia.org/wiki/Positron_emission

   Positron emission, beta plus decay, or β + decay is a subtype of radioactive decay called beta decay, in which a proton inside a radionuclide nucleus is converted into a neutron while releasing a positron and an electron neutrino (ν e). Positron emission is mediated by the weak force.

7. Antibiotic - Wikipedia

   en.wikipedia.org/wiki/Antibiotic

   An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of such infections. [1] [2] They may either kill or inhibit the growth of bacteria.