Piezo 2 immunoreactivity in the zebrafish (D. rerio) inner ear. (a) Sensory hair cells (arrows), cilia (asterisk), and nerve (gallon arrow) that reach the ampullate crest BDNF immunoreactive; (b) sensory ciliate cells (arrows), cilia (asterisk), and nerve (gallon arrow) reaching the Piezo 2 immunopositive ampullate crest; (c) Piezo 1/BDNF double-staining in some sensory hair cells (arrows), cilia (asterisk), and nerve (gallon arrow) that reaches the ampullate crest; (d) sensory cells (arrows) in the macula of the utricle BDNF immunoreactive; (e) sensory cells (arrows) in the macula of the utricle Piezo 2 immunopositive; (f) sensory cells (arrows) in the macula of the utricle BDNF/Piezo 2 double-stained; (g) sensory cells (arrows) and nerve (gallon arrows) in the macula of the lagena BDNF immunoreactive; (h) sensory cells (arrows) and nerve (gallon arrows) in the macula Piezo 2 immunostained; (i) sensory cells (arrows) and nerve (gallon arrows) in the macula of the lagena Piezo 1/BDNF double-labeled; (j) sensory cells (arrows) and nerve (gallon arrows) in the macula of the sacculus immunoreactive to BDNF; (k) sensory cells (arrows) and nerve (gallon arrows) in the macula of the sacculus immunopositive to Piezo 2; (l) sensory cells (arrows) and nerve (gallon arrows) in the macula of the sacculus Piezo 2/BDNF double-stained. Magnification 40×.
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