Fig. 4. Characterization of anti-AQP-x5 serum by western blot analysis. (A)
Immunoreactive bands are seen at 29.0 kDa in an extract of AQP-x5
cRNA-injected oocytes. (B) The membrane was immunostained with the antiserum
preabsorbed with the antigen peptide (10 µg ml-1).