{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,4]],"date-time":"2025-09-04T14:14:32Z","timestamp":1756995272838},"reference-count":25,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2004,10,9]],"date-time":"2004-10-09T00:00:00Z","timestamp":1097280000000},"content-version":"vor","delay-in-days":7416,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Comparative Neurology"],"published-print":{"date-parts":[[1984,6,20]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The axonal projections of the seven mechanosensory neurons in the connectives and peripheral nerves were examined by horseradish peroxidase (HRP) injections.<\/jats:p><jats:p>In the connective the closely functionally related mechanosensory neurons travel in two bilaterally symmetrical regions, which comprise less than 10% of the connective's cross\u2010sectional area. This grouping may reflect the similar functional properties and synaptic connections of the cells.<\/jats:p><jats:p>Serial sections through the neuropil\u2010connective junction zone showed that the organization of the axons is independent of glial fasciculation. Fascicles are not rigid structures; they were found to part and fuse in a seemingly random manner. The glial cell seems therefore to have only a supportive structural function and not to play any role in axonal guidance or to define any specific nerve fascicles in the leech.<\/jats:p><jats:p>The projections of the mechanosensory cells in the peripheral roots were not as stereotyped as in the connective. However, examination of the branching of the medial and lateral P cells in the posterior root showed that the roots are highly structured and that some axons may be confined to tracts which have specific positions related to the branching of the root. The possible role of the P cells in pioneering these tracts is discussed.<\/jats:p>","DOI":"10.1002\/cne.902260209","type":"journal-article","created":{"date-parts":[[2005,1,1]],"date-time":"2005-01-01T19:11:42Z","timestamp":1104606702000},"page":"255-262","source":"Crossref","is-referenced-by-count":7,"title":["Axonal projections of mechanosensory neurons in the connectives and peripheral nerves of the leech, <i>Haemopis marmorata<\/i>"],"prefix":"10.1002","volume":"226","author":[{"given":"J\u00f8rgen","family":"Johansen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Susan","family":"Hockfield","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ronald D. 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