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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: Hear Res. 2016 Jun 8;339:12–22. doi: 10.1016/j.heares.2016.06.002

Figure 3.

Figure 3

Postnatal maturation of synaptic ribbon counts in inner (A) or outer hair cells (B) from P4 through P42. Key in A also applies to B. OHC ribbon counts include all CtBP2-positive puncta, regardless of whether they appear in the subnuclear or supranuclear cluster (Fig. 2B). Data are obtained from 2-4 ears at each postnatal age. In the IHC area, two z-stacks, each containing 8-11 IHCs were evaluated at each frequency region from each ear. Thus each point represents the average count from at least 32 IHCs. In the OHC area, one z-stack from each ear, each containing 29-33 OHCs (from all three rows) was evaluated at each frequency region. Thus each point represents the average count from at least 58 OHCs.