Researchers at the UniversityofCalifornia, LosAngeles,hadalready studiedyeast cellsbeer, discovering thattheir cell wallsvibratedat a rate of1,000pulses per second.These movements, transformed intosound,creatingwhat scientistshave described as ahigh-frequency sound(the equivalent of twooctaves abovemiddleC on thepiano).Responsible forthese vibrationsaremolecular motorsthat transportproteinsinsidethe cell
Getsoundsof human cellsis more difficult,becauseanimal cellshave membraneswhosevibrationsrippledifficult.Yethuman cells"emita whimper"when they receivelight.
This property istaking advantageRichardSnookandPeterGardner, a biologist atthe University ofManchester,to detectcancer.To performtheir experiments, theybombardedhuman prostatecellswithinfrared rays,and microphonesperceivedthousandsof simultaneous notesgeneratedby the cells.Statistical analysis ofthese soundscould be very significant, asGardnerpoints out:The difference betweena healthy celland acancerousisthat betweentwo greatorchestrasplayingtime, only inthe cancerorchestratubahorriblyout of tune
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