RID21280 surface of segment of spinal cord
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RID21283 surface of cervical segment of spinal cord
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RID21284 surface of C1 segment
RID21285 surface of C2 segment
RID21286 surface of C3 segment
RID21287 surface of C4 segment
RID21288 surface of C5 segment
RID21289 surface of C6 segment
RID21290 surface of C7 segment
RID21291 surface of C8 segment