Whole blood samples were collected in PAXgene tubes prior to coronary angiography. PAXgene tubes were processed according to the manufacturer’s instructions, and then frozen at −20 °C. RNA was purified from 400ul PAXgene solution using the magnetic bead-based Agencourt RNAdvance system. PCR primers used for RT-qPCR have been previously described for ITGA2B [9]; primers for the genes in the smoking GES can be found in the Additional file 1: Table S2 RT-qPCR was performed using the Roche Light Cycler 480 system.
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