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Scientific writing often uses a few Latin phrases, either abbreviated (etc. for et cetera and et al. for et alii) or spelt out (in vitro, in vivo, in situ). Should they be set in italics? As is common with such queries, there is no single right or wrong answer, although, increasingly, the trend is to dispense with italics. Most publishers and style guides instruct authors not to use italics for such phrases. Both Springer and Elsevier, for example, insist on setting "in vitro," "in vivo," and "in situ" in normal, or Roman, font, and so does the Chicago Manual of Style and Scientific Style and Format.