The Editor is issuing this Editorial Expression of Concern to alert readers that an irregularity has been identified in Fig. 1a. In this figure, the negative uninfected control lanes 3 and 7 appear to be identical, with one of the lanes flipped. Due to the age of the article, the raw data for this figure are not available for verification; therefore, readers are advised to interpret the results of this work with caution.
Shahin Rafii, Scott Ely, John J. O’Leary, Elizabeth M. Hyjek and Ethel Cesarman agree to this Editorial Expression of Concern. The editor was not able to obtain a current email address for Ornella Flore.
