Fig. 2.

APV slows dendritic arbor growth over 24 hr. Time-lapse in vivo confocal images of DiI-labeled tectal neurons imaged at 24 hr intervals. Images in the top rowof each set (0h) were collected at 0 hr, before drug treatment. Images in the bottom row of each set (24h) were collected 24 hr after exposure to rearing solution (CONTROL) or APV, as indicated. Three neurons from each group are shown in order of increasing dendritic branch tip numbers at the initial image from left toright.