Anaerobic means without air, opposed to aerobic. In biochemistry, it refers to growing in the absence of air or oxigen. Some anaerobic organisms are killed by brief exposure to oxygen, whereas it may READ MORE http://en.wikipedia.org/wiki/Anaerobic
An amyloid is an insoluble fibrous protein aggregate sharing specific structural traits. Abnormal accumulation of amyloid in organs may lead to amyloidosis and may play a role in a number of neurodege READ MORE http://en.wikipedia.org/wiki/Amyloid
An ampule (also ampoule or ampulla) is a small, sterile vial with an airtight seal which is used to contain and preserve a single drug dose, usually a solid or liquid. Ampules are commonly made of gl READ MORE http://en.wikipedia.org/wiki/Ampoule
A substance that has both acid and base properties and is capable of functioning either as an acid or as a base. Amphoteric molecules can accept or donate protons to act as an acid or a base. READ MORE http://dictionary.reference.com/browse/amphoteric
Ampholytes are molecules that contain both acidic and basic groups (and are therefore amphoteric) and will exist mostly as zwitterions in a certain range of pH. The pH at which the average charge is z READ MORE http://en.wikipedia.org/wiki/Zwitterion
Amino Acids are a class of more than 20 naturally occuring hydrocarbon molecules containing an amine group, a carboxylic acid group and a side chain that varies between different amino acids. These mo READ MORE http://en.wikipedia.org/wiki/Amino_acid
Alkylation is the introduction by substitution, adition or transfer of an alkyl group from into an organic compound. The alkyl group may be transferred as an alkyl carbocation, a free radical, a carba READ MORE http://en.wikipedia.org/wiki/Alkylation
Albumins are the major plasma protein, responsible for much of the plasma colloidal osmotic pressure and serving as a transport protein for large organic anions (e.g., fatty acids, bilirubin, some dru READ MORE http://encyclopedia.farlex.com/Albumins
Alanine (abbreviated as Ala or A) an α-amino acid. There are more than 20 naturally occurring amino acids. Amino acids are molecules containing an amine group, a carboxylic acid group and a side cha READ MORE http://en.wikipedia.org/wiki/Alanine
A cluster or clustered mass. In biochemical sciences this refers to, for example, a cluster of protein molecules. Aggregates of cells (solid, fluffy, or pelletrized), can clog the pores of filters or READ MORE http://dictionary.reference.com/browse/aggregate
Agarose is a polysaccharide (sugar) gelatinous substance obtained from seaweed and used as a solidifying agent (agar)in a microbial culture. It is also used in gel electrophoresis. Historically it is READ MORE http://en.wikipedia.org/wiki/Agarose
An affinity tag or affinity tail is an amino acid sequence added to a protein to facilitate purification by affinity chromatography. Affinity tags are appended to proteins so that they can be purified READ MORE http://mcl1.ncifcrf.gov/waugh_pubs/7_Waugh.pdf
Affinity chromatography is a chromatographic method that makes use of the specific binding of one molecule to another. It can be used in a number of applications, including nucleic acid purification, READ MORE http://en.wikipedia.org/wiki/Affinity_chromatography
Affinity comes from the Latin verb affinis = connected with. In pharmacology, biotechnology and chemistry affinity refers to the attaction between particles or substances; relatively speaking, a measu READ MORE http://en.wikipedia.org/wiki/Affinity
A process in which molecules in solution or suspension adhere to cells other than molecules - or to solid serfaces, such as chromatography media. Also: the collection of a substance onto the surface o READ MORE http://en.wikipedia.org/wiki/Adsorption
Numerical limits, ranges or other suitable measures for the acceptance of the results of analytical procedures which a pharmaceutical compound, substance, drug, or (raw) material needs to meet at vari READ MORE http://en.wikipedia.org/wiki/Acceptance_testing