Expression of LSP1 in stably transfected, constituitively expressing A7 melanoma lines used to analyze motility. Shown is an anti-LSP1 immunoblot developed by chemiluminescence of equal protein loads of (P) PMNs, the stably transfected, constituitively expressing A7ML1, A7RL5, A7RL2 cell lines and a control line, A7R2, stably transfected with pREP vector alone.