Volume Spike Investor

Geron shares are up more than 5 percent to more than $8 in premarket trading at about 9:15 Eastern, on volume of about 160,000 shares.

The company published data showing that dendritic cells made from human embryonic stem cells show the normal functions of naturally-occurring human dendritic cells found in the bloodstream. The company says the findings support the use of stem cell-derived dendritic cells in vaccines for cancer and other diseases.  — Mike Tarsala