Abstract
The olfactory epithelium is an extremely functionally diversified organ. Scattered distribution of over 1000 different types of olfactory sensory neurons (OSNs) and concha structures of mouse olfactory turbinates have greatly increased technical difficulties in research and limited applicability of certain methods. We have developed a method to monitor intracellular calcium transients of individual OSNs from intact olfactory turbinates. With this method, it becomes feasible to locate OSNs of the same specificity from preparation to preparation based on anatomical landmarks of olfactory turbinates, zonal distribution patterns of OSNs, and neuronal response characteristics. This preparation is steady under perfusion, which largely minimizes artifacts. Since this method does not involve enzymatic digestions or mechanic tearing and chopping, the preparation gives OSNs an environment close to in vivo physiological conditions. This approach has provided a platform for studying interaction between OSNs or modulations of OSN activity by other epithelial cells.
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