Fig. 3.

(A) Quantitative and semiquantitative RT-PCR analysis of GDNF and Pspn mRNA expression during rat sciatic nerve development and in three modes of Schwann cell differentiation. (B) Quantitative RT-PCR analysis of expression of receptors for GDNF family members during rat sciatic nerve development and in three modes of Schwann cell differentiation. Expression levels are represented relative to the level of the respective mRNA at E17 (in sciatic nerve development) or in pSC (in Schwann cells), which was arbitrarily set at one. pSC: proliferating Schwann cells, gaSC: growth-arrested Schwann cells, dSC: differentiated Schwann cells, BR: adult rat brain.