Bodies accumulate along a network of fine filaments in polyhedrosis- and granulosis-infected cells and appear to coalesce and form the cores of virus rods. The rods, which may develop singly or in bundles, attach to independently formed double membranes which later envelop them. In each bundle, the rods are oriented in the same direction as they become attached to the membrane. Single rods or bundles of rods migrate or are attracted to areas where polyhedra are formed. The protein material present there surrounds them and crystallizes to form polyhedra. In granulosis infections, single virus rods are surrounded by protein to form capsules.