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Capitalization of Main Entries 

Capitalization of Main Entries
Medical Indexes

Bruce McGregor

and Harriet S. Meyer

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Capitalization of Main Entries

Although main entries have traditionally featured initial capitals to distinguish them from subentries, The Chicago Manual of Style, 15th edition, recommends lowercase, except when the entry term would begin with a capital, eg, proper nouns.4 This is especially worthwhile in biomedical publications, in which capitalization may be complex and may distinguish otherwise identical terms.

  • AFP. See α-fetoprotein

  • Afp, 98

  • AFP, 103

  • Brca1, 112

  • BRCA1, 54, 804–809

  • breast cancer, 50–57, 110–113, 801–815

  • Haemophilus influenzae Rd, 998

  • hepatitis, 1015–1028

  • HindIII, 698

  • LPL. See lipoprotein lipase

  • LPL, 1092

  • Staphylococcus aureus, 1056–1077. See also staphylococci

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