The principal biochemical features of the illness are reduced hair cystine levels, increased copper/zinc ratio, and presence of arginosuccinic acid in the blood and urine.

Using ex vivo proton magnetic resonance spectroscopy to reveal associations between biochemical and biological features of meningiomas.

However, molecular phylogenetics, which uses biochemical features to classify organisms, has produced both results that group them with vertebrates and others that group them with hagfish.

The diagnosis of inflammatory bowel disease was based upon clinical, endoscopic and radiological findings and was supported by biochemical, scintigraphic and pathological features.

Basic morphological and biochemical features of PCD have been conserved in both plant and animal kingdoms.

However, biochemical features of this genus are currently being studied.

Protein motifs, domains, and signaling elements have, for millions of years, not only retained their ancestral biochemical features but have also continued to participate in similar physiological responses.

In the absence of clearly documented malignancy, no combination of clinical, histopathologic, or biochemical features has been shown to reliably predict the biologic behavior of pheochromocytoma.

Identification of such conserved domains has, often, improved our understanding of the general structural and biochemical features that underlie protein-small molecule interactions.

Around the same time the development of effective polymerase chain reaction techniques made it possible to apply cladistic methods of analysis to biochemical and genetic features as well.