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. Author manuscript; available in PMC: 2011 Feb 4.
Published in final edited form as: J Comp Neurol. 2009 Nov 10;517(2):134–145. doi: 10.1002/cne.22148

Figure 7.

Figure 7

Age-dependent expression of BK channels in the utricle. Whole-mount preparations of utricles were immunolabeled for BK (red) and calretinin (green). Single confocal sections taken from the striolar region are shown. A: At P6 calretinin-positive calyces are not well developed, making it difficult to identify the striolar region. However, no BK-positive hair cells were observed in any part of the epithelium. B: By P14 BK-positive hair cells are surrounded by calretinin-positive calyces. We rarely observed four BK-positive hair cells in a single field of view. C: By P21 many BK-positive hair cells engulfed in calretinin-positive calyces are present. D: By 2 months of age (P62) only a few BK-positive hair cells are evident. Scale bar = 5 µm in A–D.