The term equivalence group is used in developmental biology to describe a subset of incompletely differentiated cells that are each able to adopt the same cellular fates. This means that any one cell in an equivalence group has the potential to become the same cell types that any other cell in that equivalence is able to become. As such, this term can be considered to be an adjunct of pluripotency.

See also: cellular differentiation, totipotency, stem cells