Figure 1: Two dimensional gel of affinity-purified CA215. pI’s of protein bands range from 4.0 to 5.0 are indicated. Molecular weights of these major proteins are highlighted by arrows of 75 kDa, 55 KDa and 25 KDa, respectively. Number 1 to 9 indicates subdivided protein bands subjected to MALDI-TOF MS analysis [1,2].