TABLE 4.

Some Examples of Potential Sources of Tissue for Brain Transplantation

Postmitotic Cells	Precursor Cells
Human fetal neural	Olfactory mucosa precursor cells
Xenogenic fetal neurons	Stem cells from bone marrow
Autograft (adrenal, Schwann cells)	Immortalized cell lines
Autologous cells genetically engineered	Embryonic progenitors, committed precursors, or postmitotic neuroblasts
Cografts	Uncommitted or regionally specified progenitors
Olfactory mucosa neurons or glial cells	Committed precursors Postmitotic neuroblasts