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Fig. 1. Encapsulation of positively charged, DEAE Sepharose beads by haemocytes in
the presence of plasma. (A) Onset of encapsulation (10 min incubation),
characterized by attachment of individual haemocytes to beads. (B) End point
of encapsulation (2 h incubation), characterized by formation of
bead/haemocyte aggregates with large numbers of haemocytes attaching to the
beads. Phase-contrast microscopy. Scale bars, 80 mm.