RT-PCR analysis CD44v6 transcripts in studied cell lines. Lanes 1–5, analysis of CD44v6 (84 bp) in Mo7e, U937, HL60, LnCap, and Jurkat cell lines, respectively; lane 6, negative control (no DNA) for CD44v6; lane 7, DNA size marker, Gene Ruler, marker VIII; lanes 8–12, analysis of CD44 (481 bp) in Mo7e, U937, HL60, LnCap, and Jurkat cell lines, respectively; lane 13, negative control (no DNA) for CD44.