Technical Foundations for Chitosan-Based Spinal Cord Regeneration: A Curated Reference Collection Supporting the SUN Theory

A curated reference collection of 20 peer-reviewed academic publications forming the technical foundation for chitosan-based spinal cord regeneration. Supports the SUN Theory (Katayama, 2026), which defines chitosan from squid chitin as the physical entity of N (sufficiency) in the V=N/D existence value formula. Categories: (A) chitosan + spinal cord injury, (B) chitosan nanofiber neural tissue engineering, (C) chitosan biomaterial reviews, (D) chitosan wound healing (Sakurai Lab), (E) squid chitin extraction. Supply chain analysis: less than 0.001 percent of Japan squid catch needed for global SCI treatment.