Free Nerve Ending

2020 ◽  
Author(s):  



The structure of the two functional types of ‘free’ nerve-ending in the head skin of late Xenopus embryos has been examined by horseradish peroxidase staining through their cells in the trigeminal ganglion and by electron microscopy. Type I neurites are identified as the ‘movement’ detectors by their purely homolateral innervation. They have many fine branches between the superficial skin cells, bearing numerous large varicosities. Type II neurites cross the midline to innervate both sides of the head as do the ‘rapid transient’ detectors found by physiology. They have a few fairly straight branches between the skin cell layers with few elongated varicosities.



2012 ◽  
Vol 33 (6) ◽  
pp. 1263-1267 ◽  
Author(s):  
E. Malkoc ◽  
F. Ates ◽  
H. Tekeli ◽  
B. Kurt ◽  
T. Turker ◽  
...  






1999 ◽  
Vol 22 (8) ◽  
pp. 794-798 ◽  
Author(s):  
Hiroko TANINO ◽  
Jun-ichi YOSHIDA ◽  
Ryoji YAMAMOTO ◽  
Yumi KOBAYASHI ◽  
Shun SHIMOHAMA ◽  
...  


1969 ◽  
Vol 114 (1) ◽  
pp. 135-139 ◽  
Author(s):  
Hans Brunnert ◽  
Fumio Matsumura

DDT (1,1,1-trichloro-2,2-di-p-chlorophenylethane) and DDE (1,1-dichloro-2,2-di-p-chlorophenylethylene, a non-insecticidal analogue of DDT) were found to bind with various nerve components of rat brain. The amount of DDT binding exceeded that of DDE only in the fraction containing mainly the nerve endings. Among various components in the nerve-ending fraction, a subfraction containing mainly the pre- and post-synaptic complexes had the highest affinity for DDT in comparison with that for DDE. By using an ‘acetone-powdering’ technique on brain preparations, the Sephadex-column method was shown to provide reliable results for studies on the binding of DDT or DDE with soluble proteins in the nerve tissues. From these results it was concluded that DDE had a higher affinity for soluble components of the rat brain than did DDT.



1971 ◽  
Vol 9 (3) ◽  
pp. 249-276 ◽  
Author(s):  
B. A. CALLINGHAM


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