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Cell growth rate of the KD, NC and BC group. As shown in the growth curve, cells transfected with NRP-1 shRNA lentivirus (KD group) grew more slowly than untransfected cells (BC group). Statistical analysis was performed by comparing cell growth rate of different groups at 48, 72 and 96 h, with a result of decreased growth rate in KD group vs. BC group at different times. KD, knockdown; NC, negative control; BC, blank control; NRP-1, neuropilin-1.
