Fun, it’s true, on Halloween. Interesting, true, like the fabulous African mask collection at the Stanley Museum in Iowa City. Not so fun, also true, like the mask that pins you to a table during head ...
Apr. 16—Burrs from a dried burdock plant frame the top of a radiation mask like a crown of thorns. The mask, a thermoplastic device of mesh construction, is used in the treatment of cancer patients.
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