I take snapshots of web sites of interest by the simple procedure of e-mailing the site to myself. On November 15, 2002 I last took a snapshot of the Agdia Rose Virus site. At that time the PNRSV information was as follows:
Pathogen: Prunus Necrotic Ringspot Virus
Spread by: ?
Test protocl: ELISA
The present “Spread by” for PNRSV is: “mechanical, seed”
Thus, there has been a recent change from “?” to “mechanical, seed”