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1. Remove and discard culture medium.
2. Briefly rinse the cell layer with 0.25% (w/v) Trypsin- 0.53 mM EDTA (ATCC^® 30-2101™) solution to remove all traces of serum that contains trypsin inhibitor.
3. Add 2.0 to 3.0 mL of Trypsin-EDTA solution to flask and observe cells under an inverted microscope until cell layer is dispersed (usually within 5 to 15 minutes).
   Note: To avoid clumping do not agitate the cells by hitting or shaking the flask while waiting for the cells to detach. Cells that are difficult to detach may be placed at 37°C to facilitate dispersal.
4. Add 6.0 to 8.0 mL of complete growth medium and aspirate cells by gently pipetting.
5. Add appropriate aliquots of the cell suspension to new culture vessels.
6. Incubate cultures at 37°C.

Loor R, et al. Use of pancreas-specific antigen in immunodiagnosis of pancreatic cancer. Clin. Lab. Med. 2: 567-578, 1982. PubMed: 6754226

Lan MS, et al. Polypeptide core of a human pancreatic tumor mucin antigen. Cancer Res. 50: 2997-3001, 1990. PubMed: 2334903

Chambers JA, Harris A. Expression of the cystic fibrosis gene and the major pancreatic mucin gene, MUC1, in human ductal epithelial cells. J. Cell Sci. 105: 417-422, 1993. PubMed: 7691840

Tan MH, et al. Characterization of a new primary human pancreatic tumor line. Cancer Invest. 4: 15-23, 1986. PubMed: 3754176