THE NUCLEIC ACIDS 



OF THE NERVE CELL'S NUCLEUS 



AND CYTOPLASM 



W. JA. BRODSKY 



Institute of Animal Morphology,Academy of Sciences of USSR, Moscow 



The investigation of the various nerve cells (UV and visible cytophoto- 

 metry, Feulgen's reaction, fast green staining) results to the next 

 conclusions: 1) The gênerai trend of cytoplasmic RNA functional changes 

 are similar in the neurons of various types and phylogenetical levels 

 (insects, amphibians, mammals). 2) The nucleus of some neurons fulfils 

 a part of the synthetic functions which usually carried out cytoplasm. 

 The nuclear RNA changes periodically. That's the conclusion there 

 are 2 forms of RNA. 3) There is the corrélation between the quantities 

 and changes of RNA and proteins in the nerve cells. 4) There are no 

 changes of DN\ in the intensive synthesis of the neuron's RNA (quanti- 

 tative data). 5) There is increase of the nucleolar surface in the RNA 

 synthesis. 6) The increase of RNA content take place only by intact 

 circulatory system (the comparison was done of RNA changes by light 

 stimulation of a normal frog, of diplacin treated frogand of isolate retina). 

 7) There is the change of ribonucleoprotein state in the RNA synthesis: 

 the number of free phosphorus groups. 



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