biosignature(redirected from Bio-sign)
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1. A chemical or physical marker indicating the presence of life, especially something sought in geologic formations or in an extraterrestrial environment. Also called biomarker.
2. See biomarker.
biosignature(bī″ō-sig′nă-chŭr) [ bio- + signature]
A particular group of proteins found in body fluid or tissue that identifies the tissue type or a molecular disease.