Medical dictionary. 2011.
Malignant transformation — In genetics, transformation is also used to describe the incorporation of foreign DNA by bacteria. Malignant transformation is the process by which cells acquire the properties of cancer. This may occur as a primary process in normal tissue, or… … Wikipedia
Malignant — (from the Latin roots mal = bad and genus = born ) is a medical term used to describe a severe and progressively worsening disease. The term is most familiar as a description of cancer. A malignant tumor may be contrasted with a non cancerous… … Wikipedia
Transformation — (root transform ) may refer to:Transformation is also referred to as a turn.In science: * Transformation (geometry), in mathematics, as a general term applies to mathematical functions. ** Data transformation (statistics) in statistics. *… … Wikipedia
transformation — Any alteration in the properties of a cell that is stably inherited by its progeny. Classical example was the transformation of Diplococcus pneumoniae to virulence by DNA, achieved in 1944 by Avery, MacLeod & McCarty. Currently usually refers to… … Dictionary of molecular biology
Transformation (genetics) — An unrelated process called malignant transformation occurs in the progression of cancer. In molecular biology transformation is the genetic alteration of a cell resulting from the direct uptake, incorporation and expression of exogenous genetic… … Wikipedia
transformation — 1. SYN: metamorphosis. 2. A change of one tissue into another, as cartilage into bone. 3. In metals, a change in phase and physical properties in the solid state caused by heat … Medical dictionary
malignant peripheral nerve sheath tumor — a malignant type of schwannoma whose appearance is superficially similar to that of a fibrosarcoma; it may occur in association with neurofibromatosis that is undergoing malignant transformation. Called also malignant schwannoma,… … Medical dictionary
malignant histiocytosis — a rare type of histiocytosis found accompanying malignancies such as acute myelogenous leukemia; it may be a malignant transformation of stem cells of the monocyte series. It usually affects children or young adults and has a poor prognosis … Medical dictionary
viral transformation — Malignant transformation of an animal cell in culture, induced by a virus … Dictionary of molecular biology
transformation — n. 1 the act or an instance of transforming; the state of being transformed. 2 Zool. a change of form at metamorphosis, esp. of insects, amphibia, etc. 3 the induced or spontaneous change of one element into another. 4 Math. a change from one… … Useful english dictionary
