Low (A) and high (B) magnification view at LB (large arrow).
Low (C) and high (D) magnification view at UB (large arrow). Asterisk indicates the electrode track; Lines indicate the thickness of fibrous tissue at each point: S, superior; M, medial; I, inferior; SV, scala vestibuli; ST, scala tympani; }, new bone formation; small arrow, osseous spiral lamina; IAC, internal acoustic canal