Acronyms and Definitions
Committed cells: progenitor cells that have entered a given differentiation pathway and will form no other cell types
ES cell: embryonic stem cell
Multipotent cells: cells that will form multiple derivatives of a given cell population; this behavior is characteristic of many neural crest progenitor cells
NCSC: neural crest stem cell
Neural crest: a migratory cell population born during early embryonic development, consisting of primarily multipotent, bipotent, and unipotent progenitor cells but also containing a small proportion of pluripotent stem cells
Pluripotent cells: stem cells that are capable of generating all derivatives of a given cell or tissue population
Progenitor cells: cells that may exhibit self-renewal capabilities similar to pluripotent stem cells but are specified to give rise to one or a few limited derivatives as a result of a restrictive cell division
Restricted cells: progenitor cells that have become more defined in which cell types they will produce, usually between one or two different differentiation paradigms
Self-renewal: the generation of a daughter cell that is identical to the parental cell itself; an activity that defines a true stem cell
Stem cells: cells that divide indefinitely and clonally to generate (a) a daughter cell that remains undifferentiated like the parental cell as well as (b) another daughter cell that differentiates into multiple distinct cell types