In-vitro cultivation of human cytomegalovirus in thyroid epithelial cells

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Abstract
Several strains of human cytomegalovirus including recent isolates, were grown in epithelial cells derived from thyroid tissue. All the strains tested grew in these cultures without pre-treatment of the cells, and no difference in cytopathic effect was detected between strains of genital and non-genital origin. 4 strains of CMV were isolated directly from urine in thyroid cells; however the failure to isolate 6 further strains in these cultures from other specimens may indicate that a higher multiplicity of infection is required to infect epithelial than fibroblast cells.