Textbooks may have misdrawn this basic brain structure for 100 years

According to a report by Random News Portal… Scientists discovered that brain-cell axons may not be smooth tubes as textbooks have shown for more than a century, but instead naturally resemble strings of tiny pearls. Those pearl-like structures can change with neural activity and may help control how quickly electrical signals travel through the brain. complete report is on link below. Source: https://www.sciencedaily.com/releases/2026/09/260915232138.htm