Container element for one set of keywords (<kwd>s) used to describe a a book or book component (e.g., a chapter)
A document may have multiple sets of keywords, each with a source that is named in the kwd-group-type attribute.
<!ELEMENT kwd-group %kwd-group-model; >
... <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>DNA analysis</kwd> <kwd>gene expression</kwd> <kwd>parallel cloning</kwd> <kwd>fluid microarray</kwd> </kwd-group> ... </book-meta> ...