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Histochemical studies on the accessory body of Cajal in neurones of the cat
Author(s) -
Nayyar Rajan P.,
Barr Murray L.
Publication year - 1968
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/cne.901320107
Subject(s) - biology , cajal body , nucleolus , nucleic acid , tyrosine , tryptophan , arginine , histidine , chromatin , microbiology and biotechnology , rna , anatomy , biochemistry , dna , amino acid , nucleus , gene , rna splicing
The accessory body of Cajal is an argyrophil body measuring between 0.5 μ and 1.0 μ in diameter and is present in the nuclei of most neurones of the cat. Histochemically, the accessory body contains small amounts of bound lipids and proteins containing tyrosine, NH 2 groups and arginine. It does not possess detectable amounts of nucleic acids (RNA or DNA), tryptophan, histidine or amino acids with free SH groups. The accessory body of Cajal differs from the sex chromatin and the nucleolus in several important respects. Its role in cellular physiology is unknown.