[RS]

Adult stem cell research started in the 60's
Embryonic stem cells were first isolated in 1998.

[Sopater]

Adult stem cell research started in the 60's
Embryonic stem cells were first isolated in 1998.

Please, let's stick to the facts.

Embryonic stem cell research: 25 years of Embryonic Stem Cells

This year marks the 25th anniversary of two papers reporting the first isolation of mouse ES cells.

Human stem cells were first isolated in 1998.