Fig. S1. Inhibition of de novo RNA synthesis in skin explants blocks their ability to attract axonal growth.

Fig. S2. Upper panel: MaxEnt3-processed MS survey data illustrating five different forms of glycans detected, and a summary of the glycan forms detected on the peptide SSMPVQPTGPSTPSR and their proposed structure.

Fig. S3. MMP expression in skin and cornea explants.

Fig. S4. MMP inhibitors do not affect axonal outgrowth in response to BDNF.

Fig. S5. MMPs released by skin explants in matrigel do not cleave laminin, collagen IV, or HSPG.

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