New technique allows scientists to penetrate yeast cells' hard exterior

(PhysOrg.com) -- If you want to know how a cell responds to a particular chemical, the experiment is simple: Inject it with that chemical. Micropipettes - tiny needles that can puncture a cell and deliver a compound directly into it - are used precisely for this purpose. But biologists who study yeast have not had this tool available to them. A yeast cell`s rigid outer wall is too strong to be penetrated.

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