Preferred Label : First Degree Biological Relative;
NCIt related terms : RELATIVE, BIOLOGICAL, FIRST DEGREE;
NCIt definition : Any individual related biologically to another individual and considered immediate
family as in the case of a parent, sibling or child.;
Alternative definition : CDISC: Any individual related biologically to another individual and considered immediate
family as in the case of a parent, sibling or child. (NCI);