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2 answers

no idea. good luck with your question.

2007-10-26 22:04:29 · answer #1 · answered by Anonymous · 0 1

The first paragraph of my link gives a good explanation
Vriefly ultrasounds creates channel through the skin allowing substances either to enter or to quit the body

2007-10-26 22:18:37 · answer #2 · answered by maussy 7 · 0 0

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