Figure 4

A subpopulation of cells in developing mouse sympathetic ganglia expresses TrkB. (A) Transverse sections of E13.5 mouse embryos were cut and stained for TH (red) and Hu C/D (green) to locate developing ganglia. The ganglion shown in the box is shown at higher magnification in the inset. Different subsets of cells express TH, Hu C/D, or both markers. Sections taken from another ganglion stained with (B) TH (green), (C) TrkB (red), (D) Hoechst dye, and the overlay of all three photos. Arrow points to a cell that co-expresses TH and TrkB.