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Journal of Cell Science, Vol 7, 695-709, Copyright © 1970 by Company of Biologists

Submitted on January 31, 1970

An Inverse Relation Between Cell Density and the Number of Microvilli in Cultures of BHK 21 Hamster Fibroblasts

C. H. O'NEILL 1 and E. A. C. FOLLETT 2

1 Medical Research Council Virology Unit, University of Glasgow, Glasgow, Scotland; Imperial Cancer Research Fund, Lincoln's Inn Fields, London, W.C.2, England.
2 Medical Research Council Virology Unit, University of Glasgow, Glasgow, Scotland

The relationship between culture density and the number of microvilli on the cell surface has been studied using BHK21 cells in established monolayer culture. The number of microvilli can be estimated quantitatively by a scanning electron-microscope technique. It can be increased by applying specific antiserum, but whether antibody is applied or not a significant number of cells regularly bear microvilli. This number is characteristic of the culture density. In sparse cultures above a certain minimum density it is relatively high, and in confluent cultures it is much reduced. These results indicate that microvilli may be inhibited by cell contact.

Submitted on January 31, 1970






© The Company of Biologists Ltd 1970