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. Author manuscript; available in PMC: 2010 Jul 16.
Published in final edited form as: Reprod Domest Anim. 2008 Jul;43(Suppl 2):386–392. doi: 10.1111/j.1439-0531.2008.01189.x

Fig. 2.

Fig. 2

Glial cell line-derived neurotrophic factor can signal through a Ras-induced pathway in SSCs. The GDNF can promote cell cycle progression via activation of the Ras/ERK1/2 pathway. Downstream events are also depicted. ‘P’ indicates ‘phosphorylate’, and ‘A’ denotes ‘activate’ (from He et al. 2008)