Fig. 4. Effect of short-term (4 or 8 h) propofol treatment on subsequent dendritic development. (  A ) Detailed experimental protocol. (  B ) Representative examples of dendritic arbor expansion in control, (  C ) 4-h-long and (  D ) 8-h-long propofol (5 μg/ml)–treated neurons. Cells were stained with an anti–γ-aminobutyric acid antibody.  Correction bar (  B–D ): 75 μm.