Genes expected to be absent, or expressed at a notably low level, in these cells, and whose absence supports the assignment of this cell annotation.
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Rationale
KIT (CD117) is a receptor tyrosine kinase broadly used to identify mast cells across tissues. CPA3 (carboxypeptidase A3) is a mast cell-specific serine protease stored in secretory granules. Together these markers reliably identify mast cells and distinguish them from other immune cell populations.
