“…The antibodies used are summarized in Table . Rabbit anti‐ErbB4 (1:1,000, Abcam, #ab32375, Cambridge, MA) antibody was purchased from Abcam; rabbit anti‐GAPDH (1:5,000; Cell Signaling Technology, #5174S, Danvers, MA) antibody was purchased from Cell Signaling Technology; mouse anti‐parvalbumin (PV, 1:2,000, Swant, #PV235, Bellinzona, Switzerland) antibody was purchased from Swant; goat anti‐Doublecortin (DCX, 1:100; Santa Cruz, #SC‐8066, CA) antibody was purchased from Santa Cruz; mouse anti‐BrdU (1:200; Roche, #11170376001, IN) antibody was purchased from Roche; rabbit anti‐NeuN (1:1,000, Millipore, #MABN140, Darmstadt, Germany) antibody was purchased from Millipore; rabbit anti‐BDNF (1:1,000; Abcam, #ab108319, Cambridge, MA) antibody (Einoch et al, ; Qian et al, ) was purchased from Abcam; rabbit anti‐BDNF (1:200; Alomone, #ANT010, Jerusalem, Israel) antibody (Fulmer et al, ; Wattananit et al, ) was purchased from Alomone; rabbit anti‐TrkB (1:1,000; Cell Signaling Technology, #4603S, Danvers, MA) antibody (Pandya et al, ; Qian et al, ) was purchased from Cell Signaling Technology; rabbit anti‐TrkB (1:200; GeneTex, #GTX54857, Irvine, CA) antibody (Botsakis et al, ) was purchased from GeneTex. These antibodies' specificity were confirmed using western blotting or/and immunohistochemistry (IHC) by the corresponding manufacturer and previous studies.…”