(A) SiRNA sequences targeting either luciferase (lucif. siRNA) or N-cadherin (Nsmrt, N6D, or N25mod) were delivered into HUVEC via electroporation, and cells were plated at confluence. Immunoblot analysis for N-cadherin (left), VE-cadherin (right), and β-actin was carried out 48 hours after plating. Densitometric analysis of immunoblots is shown below. Values for N-cadherin and VE-cadherin are normalized to β-actin and are expressed relative to luciferase control (mean ± SEM; minimum n=3, for N6D P<0.0001, N25mod P=0.0024, Nsmrt P<0.0001). N6D: individual chemically modified sequence purchased from Dharmacon. Nsmrt: N-cadherin siGENOME Smartpools (unmodified) purchased from Dharmacon. N25mod: individual sequence purchased from Ambion, subsequently chemically modified by Dharmacon.