-that I describe in the Afterword. It included a project to develop
-single nucleotide polymorphisms (SNPs), which are thought to have
-great significance in biomedical research. (That nonprofit project
-comprised a consortium of the Wellcome Trust and pharmaceutical and
-technological companies, including Amersham Biosciences, AstraZeneca,
+that I describe in chapter
+<xref xrefstyle="select: labelnumber" linkend="c-afterword"/>. It
+included a project to develop single nucleotide polymorphisms (SNPs),
+which are thought to have great significance in biomedical
+research. (That nonprofit project comprised a consortium of the
+Wellcome Trust and pharmaceutical and technological companies,
+including Amersham Biosciences, AstraZeneca,