| human cytomegalovirus a sequence and ul144 variability in strains from infected children. | human cytomegalovirus (hcmv) displays genetic polymorphisms. this variability may contribute to strain-specific tissue tropism and disease expression in hcmv-infected humans. to determine strain variability in a sequence and ul144 gene regions, 51 low-passage isolates from 44 hcmv-infected children were studied. isolates were obtained from 28 healthy children attending child care centers in iowa and from 16 congenitally infected infants born in texas. isolates demonstrated substantial nucleotide ... | 2001 | 11505449 |