DISTRIBUTION OF CLATHRIN-COATED PITS IS RELATED TO CORTICAL MICROTUBULES IN GROWING CELLS BUT NOT IN NONGROWING CELLS

The distances of clathrin-coated pits to the nearest cortical microtub ules were measured in four different cell types of Equisetum hyemale, and these were compared to the distances of artificially generated ran dom markers to the same microtubules. Statistical analysis of the data showed young growing cells to possess non-random distributions of coa ted pits, while in full-grown cells coated pits seemed to be randomly distributed in relation to the microtubules.