“…A typical he1~esvirion consists of (a) a core containing a linear double stranded DNA which, in some instances, forms a torus [84,163], (b) an icosadeltahedral capsid approximately 100 to 110 nm in diameter containing 12 pentameric and 150 hexameric capsomeres, the latter with a hole running down the long axis [81,231,147]; (c) an amorphous, sometimes asymmetric material which surrounds the capsid and which was designated as the tegument [188]; and (d) a membrane designated as the envelope, in which viral glycoprotein spikes are embedded and project from its surface [4,12,75,78,99,159,160,208,209,211].…”