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Article: External tufted cells in the main olfactory bulb form two distinct subpopulations.

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Antal M; Eyre M; Finklea B; Nusser Z
Eur. J. Neurosci., 2006


Table 2.   Parameters describing the dendritic arborization pattern of ETCs
Morphological parametersCluster 1Cluster 2
Mean ± SD(Range)Mean ± SD(Range)
  • *

    P < 0.05, Cluster 1 vs. Cluster 2, Mann–Whitney or t-test. Cluster 1 contains 27 and Cluster 2 14 ETCs. Vertex ratio, a measure of the branching pattern of the dendrites; tortuosity, ratio of the length along a dendritic segment and the shortest distance in 3-D between the two ends of the segment; furthest Sholl intercept, radius of the largest virtual sphere centred on the soma that is still intercepted by the dendrite.

Dendrites in the GL
 Total length (µm)2719 ± 876(1337–4613)3512 ± 1180*(2029–5834)
 Total surface area (µm2)10385 ± 4085(5201–21973)9054 ± 2571(5087–16052)
 Number of spines55 ± 60(4–242)26 ± 24*(2–76)
 Vertex ratio0.922 ± 0.236(0.377–1.425)0.718 ± 0.143*(0.513–0.938)
 Number of segments206 ± 98(74–535)353 ± 197*(160–684)
 First segment length (µm)25 ± 20(2–75)79 ± 48*(11–160)
 First segment mean diameter (µm)3.09 ± 1.00(1.30–6.50)3.68 ± 1.03(2.25–5.40)
 Population mean segment tortuosity1.57 ± 0.32(1.27–2.45)1.58 ± 0.39(1.31–2.70)
 Furthest Sholl intercept (µm)139 ± 29(90–210)172 ± 33*(130–240)
Dendrites in the EPL
 Total length (µm)––1211 ± 736*(242–2335)
 Total surface area (µm2)––4727 ± 3562*(726–12341)
 Number of spines––8 ± 9*(0–35)
 Vertex ratio––0.92 ± 0.73*(0.00–2.00)
 Number of segments––23 ± 15*(4–46)
 First segment length (µm)––89 ± 102*(1–292)
 First segment mean diameter (µm)––2.50 ± 1.02*(1.00–4.00)
 Population mean segment tortuosity––1.41 ± 0.33*(1.09–2.02)
 Furthest Sholl intercept (µm)––362 ± 226*(130–860)

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