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Bookmark or Share- Pharmaceutical industry | Definition, Overview, History ...Insitro CEO on what machine learning can teach Big Pharma • Dec. 2, 2024, 2:12 PM ET (AP) Show less pharmaceutical industry , the discovery, development, and manufacture of drugs and medications ( pharmaceuticals ) by public and private organizations.
- Antibiotic | Definition, Types, Side Effects, Resistance ...antibiotic, chemical substance produced by a living organism, generally a microorganism, that is detrimental to other microorganisms. Antibiotics commonly are produced by soil microorganisms and probably represent a means by which organisms in a complex environment, such as soil, control the growth of competing microorganisms.Microorganisms that produce antibiotics useful in preventing or ...
- Vaccine | Definition, Types, History, & Facts | BritannicaA vaccine can confer active immunity against a specific harmful agent by stimulating the immune system to attack the agent. Once stimulated by a vaccine, the antibody-producing cells, called B cells (or B lymphocytes), remain sensitized and ready to respond to the agent should it ever gain entry to the body.A vaccine may also confer passive immunity by providing antibodies or lymphocytes ...
- Polymerase chain reaction (PCR) | Definition & Steps | Britannicapolymerase chain reaction ( PCR), a technique used to make numerous copies of a specific segment of DNA quickly and accurately. The polymerase chain reaction enables investigators to obtain the large quantities of DNA that are required for various experiments and procedures in molecular biology, forensic analysis, evolutionary biology, and medical diagnostics.
- Oxygen | Discovery, Symbol, Properties, Uses, & Facts | BritannicaDuring respiration, animals and some bacteria take oxygen from the atmosphere and return to it carbon dioxide, whereas by photosynthesis, green plants assimilate carbon dioxide in the presence of sunlight and evolve free oxygen. Almost all the free oxygen in the atmosphere is due to photosynthesis. About 3 parts of oxygen by volume dissolve in 100 parts of fresh water at 20 °C (68 °F ...
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