Primary antibodies used in this study include CD45 (30-F11, BioLegend), E-cadherin (DECMA-1, BioLegend), vimentin (sc-7557, Santa Cruz), PyMT (ab15085, Abcam), Neu (sc-284, Santa Cruz), Ki67 (ab15580, Abcam), and Active Caspase-3 (C92–605, BD Pharmingen). Primary antibodies were directly conjugated to Alexa Fluor 647 using an antibody labeling kit (Invitrogen) performed as per manufacturer’s instructions and purified over BioSpin P30 columns (Bio-Rad). GFP+ and RFP+ cells were detected by inherent fluorescence.
Fluorescent images were obtained using a computerized Zeiss fluorescent microscope (Axiovert 200M), fitted with an apotome and an HRM camera. Images were analyzed using Axiovision 4.6 software (Carl Zeiss Inc.).