Fig. 6.

Spinal cord neurites grow similar lengths on rostral and caudal membranes and on laminin. Cultures were prepared as in Figure 5. Membranes or laminin were applied to one set of lanes in each culture. Intervening lanes were uncoated. Measurements of neurite length were made in cultures as in Figure 5. Columnsshow average neurite length (±SE), measured as the distance from the edge of the explant to the end of the longest neurite. Extent of outgrowth on laminin-coated stripes (data not shown, but see Figure 7) is given for comparison. Numbers indicate number of cultures in each category. Asterisks indicate that caudal neurites grew significantly less than rostral neurites on both rostral and caudal membranes (p < 0.05).