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Table IV

MT Density in MAP1B+/+ and −/− Axons

Examined areaNumber and genotype of samplesAge*Area of examined axonsMT density (n)
      10−2 μm2   
Cerebellar parallel fiber  Wild-type 8  24  0.020 ± 0.010  1.2 ± 0.5 (49) 
  Homozygote 9  24  0.021 ± 0.006  1.2 ± 0.4 (31) 
         
Optic nerve  Wild-type 9   8  0.32 ± 0.12  0.6 ± 0.2 (26) 
  Wild-type 10   8  0.30 ± 0.11  0.7 ± 0.2 (35) 
  Homozygote 10   8  0.34 ± 0.11  0.7 ± 0.1 (30) 
  Homozygote 11   8  0.31 ± 0.13  0.7 ± 0.2 (28) 
         
Olfactory sensory neuron  Wild-type 11   7  0.022 ± 0.006  1.3 ± 0.4 (27) 
 (near the surface)  Homozygote 12   7  0.023 ± 0.005  1.3 ± 0.4 (22) 
         
Olfactory sensory neuron  Wild-type 12   7  0.033 ± 0.007  0.8 ± 0.3 (26) 
 (near the glomerular  Wild-type 13   8  0.034 ± 0.007  1.2 ± 0.5 (10) 
 layer)  Wild-type 14   8  0.035 ± 0.014  1.1 ± 0.4 (16) 
  Homozygote 13   7  0.037 ± 0.006  0.8 ± 0.2 (25) 
  Homozygote 14   8  0.036 ± 0.014  1.0 ± 0.4 (26) 
  Homozygote 15   8  0.037 ± 0.006  1.2 ± 0.3 (20) 
Examined areaNumber and genotype of samplesAge*Area of examined axonsMT density (n)
      10−2 μm2   
Cerebellar parallel fiber  Wild-type 8  24  0.020 ± 0.010  1.2 ± 0.5 (49) 
  Homozygote 9  24  0.021 ± 0.006  1.2 ± 0.4 (31) 
         
Optic nerve  Wild-type 9   8  0.32 ± 0.12  0.6 ± 0.2 (26) 
  Wild-type 10   8  0.30 ± 0.11  0.7 ± 0.2 (35) 
  Homozygote 10   8  0.34 ± 0.11  0.7 ± 0.1 (30) 
  Homozygote 11   8  0.31 ± 0.13  0.7 ± 0.2 (28) 
         
Olfactory sensory neuron  Wild-type 11   7  0.022 ± 0.006  1.3 ± 0.4 (27) 
 (near the surface)  Homozygote 12   7  0.023 ± 0.005  1.3 ± 0.4 (22) 
         
Olfactory sensory neuron  Wild-type 12   7  0.033 ± 0.007  0.8 ± 0.3 (26) 
 (near the glomerular  Wild-type 13   8  0.034 ± 0.007  1.2 ± 0.5 (10) 
 layer)  Wild-type 14   8  0.035 ± 0.014  1.1 ± 0.4 (16) 
  Homozygote 13   7  0.037 ± 0.006  0.8 ± 0.2 (25) 
  Homozygote 14   8  0.036 ± 0.014  1.0 ± 0.4 (26) 
  Homozygote 15   8  0.037 ± 0.006  1.2 ± 0.3 (20) 

The means ± SD and n (the number of axons examined) are shown. In each examined area, MT density did not differ significantly between MAP1B+/+ and −/− mice.  

*

 Number of postnatal weeks at time of sacrifice for experiments.  

 Number of MTs per 10−2 μm2.  

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