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The Notch1 receptor is present in the embryonic and adult lacrimal gland at the protein level. While Notch1 was highly expressed in the epithelium and mesenchyme of E16.5 lacrimal glands (A), Notch1 was expressed only in single, isolated cells in adult lacrimal glands (B, C). Pax6 was used as a lacrimal gland marker. DAPI was used to visualize the nucleus of each cell.
