title: Two populations of herpes virus virions which appear to differ in physical properties and DNA composition.
mesh_terms: D002499:Centrifugation, Density Gradient; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004279:DNA, Viral / Q000032:analysis*; D006358:Hot Temperature; D018139:Simplexvirus / Q000032:analysis*; D013936:Thymidine / Q000378:metabolism
chemical_list: D004279:DNA, Viral; D013936:Thymidine