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Quarterly Journal of Microscopical Science, Vol s3-102, 455-461, Copyright © 1961 by Company of Biologists

A Histochemical Study of the Connective-Tissue Sheath of the Nervous System of Periplaneta americana

DOREEN E. ASHHURST 1

1 Department of Zoology, The University, Manchester; Department of Entomology, University of Minnesota, St. Paul 1, Minnesota, U.S.A.

The connective-tissue sheath surrounding the nervous system of Periplaneta americana consists of two layers, the neural lamella and the sheath cells beneath it. The neural lamella is composed of a collagen-type protein and neutral muco-polysaccharide. The sheath cells possess numerous lipochondria and mitochondria; the former consist of phospholipid and some cerebroside. The cytoplasm of the sheath cells contains some RNA, glycogen, and lipid.






© The Company of Biologists Ltd 1961