embryo stem

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• Stem cell research policy — Stem cell research policy, a controversial topic, varies significantly throughout the world. There are overlapping jurisdictions of international organizations, nations, and states or provinces. Some government policies determine what is allowed… …   Wikipedia

• Stem cell controversy — The stem cell controversy is the ethical debate primarily concerning the creation, treatment, and destruction of human embryos incident to research involving embryonic stem cells. Not all stem cell research involves the creation, use, or… …   Wikipedia

• Stem cell — Mouse embryonic st …   Wikipedia

• Embryo drawing — refers to any representation of the illustration of embryos in their developmental sequence. In plants and animals, an embryo develops from a zygote, the single cell that results when an egg and sperm fuse during fertilization. In animals, the… …   Wikipedia

• Embryo donation — is a form of third party reproduction. In vitro fertilisation often results in a number of frozen, unused embryos after the woman for whom they were originally created has successfully carried one or more pregnancies to term. In embryo donation,… …   Wikipedia

• stem cell — Cell Biol. a cell that upon division replaces its own numbers and also gives rise to cells that differentiate further into one or more specialized types, as various B cells and T cells. [1880 85] * * * ▪ biology Introduction  an undifferentiated… …   Universalium

• Stem cell line — A stem cell line is a family of constantly dividing cells, the product of a single parent group of stem cells. They are obtained from human or animal tissues and can replicate for long periods of time in vitro ( within glass ; or, commonly, in… …   Wikipedia

• Stem cell — One of the human body s master cells, with the ability to grow into any one of the body s more than 200 cell types. All stem cells are unspecialized (undifferentiated) cells that are characteristically of the same family type (lineage). They… …   Medical dictionary

• Embryo — An embryo (from Greek: Polytonic|ἔμβρυον , plural Polytonic|ἔμβρυα , lit. that which grows, from en in + bryein to swell, be full ) is a multicellular diploid eukaryote in its earliest stage of development, from the time of first cell division… …   Wikipedia

• stem cell — an undifferentiated cell that is able to renew itself and produce all the specialized cells within an organ. Stem cells occur in many tissues and organs, including the bone marrow (see haemopoietic stem cell), muscle, liver, pancreas, etc.… …   The new mediacal dictionary

• stem cell — /ˈstɛm sɛl/ (say stem sel) noun Biology a cell in a bodily tissue or organ which is undifferentiated as to form and function but which is capable of dividing and renewing itself and in this process can give rise to a specialised cell type; found… …