Fig. 1.
Particles clustering in the sap of diseased tissue by negative staining preparation. a and b, lettuce infected by TSWV-LX, black arrow indicate single particle (SP), white arrow indicate double particles clustering (DPC), white wide arrow indicate triple particles clustering (TPC); c and d, tomato infected by TZSV-ChG, showed viral particles aggregated as SP (black arrow), DPC (white arrow) and MPC (white wide arrow). Bar = 100 nm