Representative western blots of prominin1, c-kit, and Notch1 in 8 human neuroblastoma cell variants. Note that the amount of protein in I-type cells is consistently higher that in N and S variants. Lane, line: 1, (phenotype): 1, SH-SY5Y (N); 2, BE(2)-M17 (N); 3, SK-N-HM (I); 4, CB-JMN (I); 5, SK-N-LP (I); 6, BE(2)-C (I); 7, BE(2)s (S); and 8, SH-EP1 (S).