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Indicators
Not considered one of the 20 amino acids, Cystine is a sulfur-containing derivative obtained from oxidation of cysteine amino acid thiol side chains. It functions as an antioxidant and protects tissues against radiation and pollution, slowing the aging process. It also aids protein synthesis. Cystine is abundant in many proteins of skeletal tissues and skin, and found in insulin and digestive enzymes chromotrypsinogen A, papain, and trypsinogen. (NCI04)
Tests
The determination of cytoplasmic CD223 expression in a biological specimen.
Indicators
This gene plays a role in signal transduction, regulation of transcription and enhancement of apoptosis.
Article
Research record from Mikrochim Acta, 2026-03-03. PMID 41772318.
Article
Research record from Crit Care Med, 2026-03-04. PMID 41778855.
Tests
The determination of the amount of dickkopf WNT signaling pathway inhibitor 1 present in a sample.
Tests
A determination of the protein-rich food in a nutritional product or meal, or a portion thereof.
Tests
A blood test done near the end of the first trimester of pregnancy to screen for common chromosomal defects. This test screens for blood levels of both free beta-human chorionic gonadotrophin (beta-hCG) and pregnancy-associated plasma protein A (PAPP-A) and can detect trisomies of chromosomes 21 (Down's syndrome), chromosome 18 (Edward's syndrome), and chromosome 13 (Patau's syndrome).
Article
Research record from Anal Chim Acta, 2026-05-19. PMID 42230014.
Tests
The determination of the amount of EGFR variant protein present in a sample.
Indicators
This gene plays a role in DNA repair and regulation of transcription.
Tests
The determination of the amount of epithelial stromal interaction 1 protein present in a sample.
