A quantitative electron microscopic analysis of the infraorbital nerve in the newborn rat.
The infraorbital nerve (n = 3) was examined in newborn rats using electron microscopic techniques. Counts of the entire nerve revealed an average of 42,051 (S.D. = 2083) unmyelinated and 168 (S.D. = 47) myelinated fibers. The unmyelinated axons averaged 0.46 micron (S.D. = 0.16) in diameter while the myelinated fibers averaged 1.71 micron (S.D. = 0.17).
D000818:Animals; D000831:Animals, Newborn / Q000033:anatomy & histology; D008442:Maxillary Nerve / Q000166:cytology / Q000254:growth & development / Q000648:ultrastructure*; D051379:Mice; D008854:Microscopy, Electron; D009413:Nerve Fibers, Myelinated; D051381:Rats; D013045:Species Specificity