Glossary is usually defined as an alphabetical list of technical terms in some specialized field of knowledge. This knowledge base glossary provides a collection of knowledge base documents that define many technical terms. These terms are arranged alphabetically, but you can quickly jump to a specific term by selecting its first letter from the index of the knowledge base glossary below.

White blood cells that are produced in the bone marrow but mature in the thymus. They are important in the body`s defenses against certain bacteria and fungi, help B lymphocytes make antibodies, and help in the recognition and rejection of foreign tissues. T lymphocytes may also be important in the body`s defense against cancers.

In vitro growth in nutrient medium of cells isolated from tissue.

Synthesis of messenger (or any other) RNA on a DNA template.

Change in the genetic structure of an organism by the incorporation of foreign DNA.

An organism formed by the insertion of foreign genetic material into the germ line cells of organisms. Recombinant DNA techniques are commonly used to produce transgenic organisms.

Process by which the information on a messenger RNA molecule is used to direct the synthesis of a protein.