title: Sister chromatid exchanges in human lymphocytes after exposure to pulse-wave ultrasound.
abstract: We have investigated the frequencies of sister chromatid exchange (SCE) induced by pulse-wave ultrasound in lymphocytes obtained from the human umbilical vein. The following results were obtained: There is an increase in the frequency of SCEs with increases in acoustic power. The critical acoustic power was 37.3-73 mW/cm2 (spatial average temporal average, SATA). Regardless of changes in pulse duration and repeated pulse frequency, if the acoustic power remains constant, the SCE frequency does not change significantly.
mesh_terms: D005260:Female; D005312:Fetal Blood; D006801:Humans; D008214:Lymphocytes; D011247:Pregnancy; D012854:Sister Chromatid Exchange; D014463:Ultrasonography / Q000009:adverse effects*