DPV377 Figure 06

Beet yellows virus

Serology of the BYV particles in crude extracts from infectedTetragonia expansa negatively stained with aqueous uranyl acetate pH 4.3. (a) Decoration plus immunogold labelling of a virus particle with antiserum specific to the p22 (major CP); note nonlabelled 'p24-tail'. (b) Specific decoration by antiserum specific to the p24 (minor CP) at the 75 nm 'tail' on a complete particle. (c) Selected particle ends showing specific decoration or immunogold labelling, respectively, of the 75 nm 'tails' by the antiserum specific to the p24. Bar represents 300 nm.