You'd think that with 1238 fonts installed on my computer (and God knows how many running around on the hard drive), with an appreciable number of them dingbats, that I'd actually have a Caduceus symbol on at least one of them. Beginning to look less and less likely, though I've got nineteen different versions of the Greek symbols for the planets, apparently. Mutter. (Edit: thank you, Mortbats. Long national nightmare over kthxbai.)
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