One subject term, critical expression, key phrase, abbreviation, indexing word, etc., that is associated with a book or a book component (e.g., a chapter) and can be used for identification and indexing purposes
For a detailed discussion on the use of <kwd>, see Keywords.
<!ELEMENT kwd (#PCDATA %kwd-elements;)* >
(#PCDATA | bold | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | strike | underline | underline-start | underline-end | alternatives | inline-graphic | private-char | chem-struct | inline-formula | named-content | styled-content | related-article | related-object | fn | target | xref | sub | sup)*
Any combination of:
... <book-meta> ... <permissions> <copyright-statement>Copyright © 2000, The National Academy of Sciences</copyright-statement> <copyright-year>2000</copyright-year> </permissions> <abstract><p>We describe a method for cloning nucleic acid molecules onto the surfaces of 5-μm microbeads rather than in biological hosts. A unique tag sequence is attached to each molecule, and the tagged library is amplified. Unique tagging of the molecules is achieved by sampling a small fraction (1%) of a very large repertoire of tag sequences. ...</p> </abstract> <kwd-group kwd-group-type="author"> <kwd>DNA analysis</kwd> <kwd>gene expression</kwd> <kwd>parallel cloning</kwd> <kwd>fluid microarray</kwd> </kwd-group> ... </book-meta> ...