Comparative analyses of BDNF, BDNF mRNA and TrkB in DIV 8 cortical neurons and striatal neurons. I: Intensity; N: Number; A: Area. Student’s t test: *P < 0.05; **P < 0.01. See text for actual P-values. Error bars show standard deviations. A, B: Levels of BDNF protein in cortical and striatal neurons. Analysis of axons and dendrites is shown in (A) and (B), respectively; n = 5. C, D: Levels of BDNF mRNA in cortical and striatal neurons. Analysis of axons and dendrites is shown in (C) and (D), respectively; n = 5. E, F: Levels of TrkB protein in cortical and striatal neurons. Analysis of axons and dendrites is shown in (E) and (F), respectively; n = 5.