Fig. 18From: The complex simplicity of the brittle star nervous systemExpression of the transcription factor Brn1/2/4 in the radial nerve cord (RNC) of O. brevispinum. a and a’ Whole-mount preparation showing the oral view of two RNC segments. Maximum intensity Z-projection of a confocal stack. b A low-magnification view of a sagittal section through the RNC. c–c”’ High-magnification view of a longitudinal section of the RNC co-labeled with anti-Brn1/2/4 antibody and the ERG1 glial markerBack to article page