Figure 6.

Developmentally regulated genes related to the following: A, transcriptional regulation; B, perineural nets; C, cell adhesion; and D, synaptic function. Heat maps denote the scaled microarray signal intensity. Given that scaling to the maximum and minimum value of a signal that is not significantly changing will amplify small perturbations from the mean and thereby give the appearance of dynamic regulation, signal values for stably expressed interneuron-specific transcription factors in the middle panel of A were scaled across microarray signal values from multiple cortical cell types (see Materials and Methods).