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Found Agar 24 times.

Displaying results 1 to 10.

1. Agar
This gelatinous material, an extract from red algae (mainly Gelidium and Gracilaria species), is most frequently used as a culture medium, especially for bacteria. It is also used as a thickener in foods, but humans can't digest it.

2. Agar-gel reaction
The reaction between an antibody and an antigen during an immunology lab procedure where the two are allowed to diffuse toward each other through an agar-gel medium. Lines of precipitation form in the places on the gel where the two react with each other and shows where the reaction has occurred.

3. Agarose (agarbiose)
This linear galactan is created by purifying agar ; when it is heated and cooled, it forms a gel that is used as a support for many types of electrophoresis and immunodiffusion . A typical gel is about 1% agarose. agarose is more porous than acrylamide and is sold in different grades; the lower its sulfate content, the more highly purified it is.

4. Agarose gel electrophoresis
A type of electrophoresis that uses a matrix of highly purified agar to separate large DNA and RNA molecules (generally around 20,000 nucleotide s in size).

5. Algae
This is a large group of diverse unicellular and multicellular aquatic plants; they grow in both fresh water and seawater and are used commercially as a source of thickeners ( agar , agarose , algin , carrageenan ) and pigments such as beta carotene . Some countries harvest them as food; Spirulina is produced by Israel and Mexico, and the Japanese consume some species of Chlorella. Some species of algae are important commercial pests because they clog pipes and foul pools and reservoirs.

6. Alligators
One of two species of crocodilian reptiles, distinguished from other caymans by a long snout, and teeth which can be seen when the mouth is closed. While the popular name (from the Spanish "lagarto", for lizard) is often applied to all American crocodilians, only Alligator mississippiensis, and its Chinese counterpart, are true alligators.

7. Andersen sampler
A device that collects microscopic plants from the air by a series of filters which eventually deposit the collected matter onto agar plates.

8. Blood agar
An agar -based medium which has been enriched with sterilized, defibrinated blood (sheep, rabbit or horse). It is used for primary plating and sub culturing, especially to determine bacterial hemolysis .

9. Cell culture
A population of cells grown on a medium such as agar for research purposes.

10. Colony counter
A device which counts the number of colonies on an agar plate (a solid growth medium).

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