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Journal of Cell Science, Vol 4, 729-737, Copyright © 1969 by Company of Biologists

Submitted on August 30, 1968

Mitochondrial Extensions Associated with Microtubules in Outgrowing Processes from Chick Spinal Cord in Vitro

FELICITY GRAINGER 1 and D. W. JAMES 1

1 Department of Anatomy, University College London London, W.C.1, England

Electron-microscopic examination of processes growing out from chick spinal cord cultivated in vitro raises the possibility that mitochondria may be continuous with a system of membrane-bound profiles ramifying within the cytoplasm. These profiles are distinctive in appearance, and appear to establish a particular spatial relationship with microtubules. In this, dense material extends from the profiles to constitute a meshwork within whose interstices tubules lie. The suggestion is made that these appearances may reflect the utilization of the products of mitochondrial activity for transport by microtubules.

Submitted on August 30, 1968






© The Company of Biologists Ltd 1969