RT Journal Article T1 Connections between postparotid terminal branches of the facial nerve: An immunohistochemistry study A1 Martínez Pascual, Paula A1 Pérez Lloret, Pilar A1 Maranillo Alcaide, Eva A1 Sanz García, Carlos A1 Simón de Blas, Clara A1 Sañudo Tejero, José Ramón A1 Konschake, Marko A1 Porzionato, Andrea A1 De Caro, Raffaele A1 Macchi, Veronica AB It has been assumed that connections between the postparotid terminal branches of the facial nerve are purely motor. However, the nature of their fibers remains unexplored. The aim of this study is to determine whether these connections comprise motor fibers exclusively. In total 17 connections between terminal facial nerve branches were obtained from 13 different facial nerves. Choline acetyltransferase antibody (ChAT) was used to stain the fibers in the connections and determine whether or not all of them were motor. All connections contained ChAT positive and negative fibers. The average number of fibers overall was 287 (84–587) and the average proportion of positive fibers was 63% (37.7%–91.5%). In 29% of the nerves, >75% of the fibers were ChAT+ (strongly positive); in 52.94%, 50%–75% were ChAT+ (intermediately positive); and in 17.65%, <50% were ChAT+ (weakly positive). Fibers traveling inside the postparotid terminal cranial nerve VII branch connections are not exclusively motor. PB Wiley SN 0897-3806 YR 2022 FD 2022-10-22 LK https://hdl.handle.net/20.500.14352/72680 UL https://hdl.handle.net/20.500.14352/72680 LA eng NO CRUE-CSIC (Acuerdos Transformativos 2022) NO Ministerio de Ciencia e Innovación (MICINN) NO Comunidad de Madrid DS Docta Complutense RD 27 abr 2024