Sister-chromatid exchanges in human lymphocytes exposed in vitro to therapeutic ultrasound.
Human lymphocytes were exposed in vitro to therapeutic levels of ultrasound (1 W/cm2, CW, 0.87 MHz, durations of 80 and 160 sec). There were no significant differences in sister-chromatid exchange frequencies between controls and ultrasound-exposed cells. Exposure of lymphocytes to the positive control (mitomycin C) resulted in a significant increase in sister-chromatid exchanges. The data do not verify a report by Stella et al. (Mutation Res., 138 (1984) 75-85) that such exposures result in increased frequencies of SCEs.
D006801:Humans; D008214:Lymphocytes / Q000648:ultrastructure*; D012854:Sister Chromatid Exchange; D014465:Ultrasonics