Gamma-tocotrienol, a radiation prophylaxis agent, induces high levels of granulocyte colony-stimulating factor

► We have shown a gradual increase in G-CSF levels in serum after GT3 administration in mice. ► G-CSF levels peak between 12 and 24 h after GT3 administration in mice. ► Induction of G-CSF by GT3 may play significant role in its radioprotective efficacy.