Abstract
In the paper by Luciano Lombardi, Giovanni Prenna, Lajos Okolicsanyi and Alain Gautier, entitled "Electron Staining with Uranyl Acetate: Possible Role of Free Amino Groups," which appeared in the March issue of the Journal (Vol. 19, no. 3, pp. 161-168, 1971), the following changes should be made on page 164.
The first paragraph, left column, should read:
Group 5: Ultrathin sections from samples of group 2, fixed for 90 min in formaldehyde and embedded in either plastic, were treated with technique 1, 2 or 3 or the corresponding control solutions.
Under "Results," the heading for the second paragraph should read: ". . .
In the figure legends at the bottom of the page, the paragraph beginning "Figs. 7-11" should read "Figs. 7-10."