ReviewPublished 7 October 2026Balloon cells in type II focal cortical dysplasia: developmental origins, molecular signatures, and epileptogenic mechanismsYan Gao · Xinna Ji · Shuo Feng · Yanyan Gao · Lingxue Li · Bing Wang · Xue Zhang · Qian ChenFrontiers in Cell and Developmental Biologydoi 10.3389/fcell.2026.1963535