Transcriptional profiling of single tumour cells from pleural effusions reveals heterogeneity of epithelial to mesenchymal transition and extra‐cellular matrix marker expression oleh Moen Sen, Ryan M. Hausler, Keely Dulmage, Taylor A. Black, William Murphy, Charles H. Pletcher Jr, Ling Wang, Chang Chen, Stephanie S. Yee, Scott J. Bornheimer, Kara N. Maxwell, Ben Z. Stanger, Jonni S. Moore, Jeffrey C. Thompson, Erica L. Carpenter