Different gradient conditions and their impact on synapse formation and neurite orientation across the main channel.

WJC: Junction channel length, C0, XXX: Maximal concentration of molecule XXX, ∇: gradient, a: gradient slope factor extracted from linear trend curve fits on synapse puncta in the main channel, SD: standard deviation, n = 5, NDrel: Relative neurite difference, N: neurite frequency, NA: non applicable, right: hydrogel layers LA 1 & LA 2, left: hydrogel layers LA 3 & LA 4.