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2. N. N. Bogolepov, Methods of Electron-Microscopic Investigation of the Brain [in Russian], First Moscow Medical Institute, Moscow (1976).
3. N. N. Bogolepov, N. I. Yakovleva, L. E. Frumkina, and S. K. Koroleva, ?Different types of nonsynaptic intercellular contacts in the developing rat brain,? Arkh. Anat.,90, No. 2, 45 (1986).
4. T. Wieland, H. Faulstich, and P. Falloidin, Progress and Prospects in Bioorganic Chemistry and Molecular Biology [Russian translation], Mir, Moscow (1978), pp. 96?100.
5. E. M. Deuchar, Cellular Interactions in Animal Development [Russian translation] Mir, Moscow (1978).