Seasonal and Spatial Variability of Virioplanktonic Abundance in Haihe River, China

Figure 3

Flow cytometric analysis of viral populations by reference method (a), the same sample filtered through membrane filters with pore sizes 0.1 μm (b), without EDTA (c), blank sample (using autoclaved 0.1 μm pore-size prefiltered natural freshwater) analysed by reference method (d).

(a)

(b)

(c)

(d)