Stem Cell Markers

Stem cell markers are proteins used to recognize and track stem or progenitor cells. They include things like CD34, SOX2, OCT4, NANOG, and others. Labs use these markers in flow cytometry, immunostaining, and functional assays to see if a cell is still “stem-like,” or differentiating. What really matters is specificity—does the marker bind only what you expect? Also, purity, correct folding, and reliable performance across batches. When these are good, results are easier to interpret, and you avoid chasing false positives or confusing signals.