Table 1.

Distribution of CART immunoreactivity patterns

Distribution of CART immunoreactivity patterns in the C boutons synapse in different ages
Age groups
Patterns	P10	P25	8 to 9 wk	6 mo	1 y old
Compact	7.2%	9.3%	6.8%	7.8%	14.7%
Puncta along the synapse	15.4%	16.7%	23.1%	29.4%	24.1%
1–3 puncta	31.6%	30.9%	27.6%	26.4%	27.2%
Peripheral puncta	19.2%	12.5%	11.7%	18.4%	19.6%
No CART	26.6%	30.6%	30.8%	18%	14.4%

In the P10, P25, 8 to 9 wk, 6 mo old, 1-y-old age groups (n = 3 mice per age group), a mean of 544 synapses per motor neuron (1,208 μm optical section thickness) were evaluated in lumbar segments (14 μm slices). The percentage of CART+ C bouton synapses differs depending on age.