Figure 1.

Human salivary gland stem cells (hSGSCs) were isolated from the normal human submandibular salivary gland. (a) Colony formation of hSGSCs with day. At day 5, a large single colony was formed. (b) Morphology of hSGSCs derived from the single colony under phase-contrast microscopy. (c) Proliferation assay. Isolated human salivary gland cells proliferated rapidly. (d) Isolated cells were evaluated with regard to cell surface marker expression by fluorescence-activated cell sorting. Bar, 100 μm.