a sign of

Fragmented wide QRS on a 12-lead ECG: a sign of myocardial scar and poor prognosis.
Multidrug resistance--a sign of the times.
Peripheral washout: a sign of malignancy on dynamic gadolinium-enhanced MR images of focal liver lesions
Intrusions as a sign of Alzheimer dementia chemical and pathological verification
Forest-killing diffuse CO2 emission at Mammoth Mountain as a sign of magmatic unrest
The Sickle-Cell Anomaly as a Sign of Mediterranean Anaemia.
Changes in muscle fibre type distribution in man after physical training. A sign of fibre type transformation?
Slow coronary flow may be a sign of diffuse atherosclerosis. Contribution of FFR and IVUS.
Elevated ambulatory day-time blood pressure in women with polycystic ovary syndrome: a sign of a pre-hypertensive state?
A non Standard Model Higgs at the LHC as a sign of naturalness