1.1.9 - Stem Cells

Stem Cells

Undifferentiated cells that can differentiate into various specialized cell types and can reproduce themselves.

Pluripotent

Stem cells that can differentiate into almost any specialized cell type in a multicellular organism, excluding placenta cells.

Totipotent

Stem cells capable of becoming any specialized cell type in the body, including the potential to develop into a new individual.

Multipotent

Stem cells that can differentiate into a limited number of closely related cell types.

Unipotent

Stem cells that can only differentiate into a single cell type, used for regeneration of their own type.

Hierarchy of Cell Potency

A classification system describing the ability of stem cells to differentiate into various cell types, from totipotent (most) to unipotent (least).

Embryonic Stem Cells

Stem cells sourced from embryos capable of becoming any specialized cell type and can reproduce indefinitely.

Adult Stem Cells

Stem cells found in adults that can reproduce themselves and produce daughter cells capable of becoming more than one type of cell, but with more limitations than embryonic stem cells.

Regenerative Medicine

A field of medicine that focuses on using stem cell therapies for rebuilding or regenerating cells, tissues, and organs.

Bioethical Considerations

The ethical implications and considerations surrounding the use of embryonic stem cells in research, including the source of embryos and the definition of life.