Changes of core dimensions after binding of VV to the cell surface and of intracellular cores measured on sections of conventional Epon embedded samples.

1concentrated purified VV or PtK2 cells infected for 30 min were embedded in Epon and sectioned. The core dimensions of intact VV, of VV bound to the cell surface (extrac. core) or of intracellular cores (intrac. core) was measured as described in ‘Materials and Methods’. n: the number of cores considered