Sentences with phrase «surface markers known»
Based on cell surface markers known as CD4 and CD8, T cells generally fall into two broad categories: CD4 — positive helper T cells, which ¬ help activate other immune cells and CD8 - positive cytotoxic T cells, which kill cells that are cancerous or infected with viruses.
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The scientists also found that a protein known as CD29 acts as a cell - surface marker for precursor fat cells that can generate mature cells with high energy potential, as shown by their UCP1 expression.