Table 1.

Quantitative measurements of Tiam1, Rac1, and RhoA immunofluorescence in growth cones of cultured hippocampal pyramidal cells

	Minor neurites	Prospective axons	Axons
Tiam1	35  ± 8	128  ± 131-a	112  ± 101-a
Rac1	95  ± 6	105  ± 14	96  ± 6
RhoA	44  ± 9	53  ± 8	46  ± 7

Average fluorescence intensity measurements within the central region of growth cones were performed as described in Materials and Methods. Each value represents the mean ± SEM. Pixel intensity expressed in gray values: 0 (black)/255 (white). A total of 50 cells were measured for each double immunofluorescence. Prospective axons were considered minor neurites of stage 2 neurons with a growth cone of >120 μm².

^F1-a Values significantly different from those found in the minor neurites.