PAX2 and cyst: We also found that the levels of the CWP1 protein and the cwp1, cwp2, cwp3, and myb2 mRNA and cyst formation decreased significantly in the Pax2m2 or Pax2m3 overexpressing cell line relative to the wild-type Pax2 overexpressing cell line (Figure 8, B, C, and D).