ambassador. 1  a diplomatic official of the highest rank, sent by one sovereign or state to another as its resident representative (ambassador extraordinary and plenipotentiary) 2  a diplomatic official of the highest rank sent by a government to represent it on a temporary mission, as for negotiating a treaty.
A bacteriostatic is a compound which has the effect of preventing bacterial growth. These agents do not kill bacteria like bactericidal compounds; instead, they limit further replication of bacteria at the site where they are introduced. Several antibiotic drugs are bacteriostatic agents, with tetracyclines being a notable example.
Bacteriocin is a small molecule, produced by bacteria, that inhibits closely related strains. It is usually a peptide or a proteinâvarying sized chains of amino acids. These compounds are of interest both in studies of basic microbiology, and for the preservation of food and enhancement of human health. These toxins are produced by a wide range of bacteria. The first to be studied was that from escherichia coli, a bacterium that lives in human intestines and is frequently used in laboratory work. It produces a number of bacteriocins, with the most well-studied being the colicins.