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. Author manuscript; available in PMC: 2019 Jan 10.
Published in final edited form as: Trends Cancer. 2018 Jan 10;4(1):20–37. doi: 10.1016/j.trecan.2017.12.002

Figure 3. Tumor cell populations in circulation.

Figure 3

Cancer cells circulate as individual cells (CTCs), as microemboli (CTMs), or in combination with other blood components such as platelets, neutrophils, or natural killer cells. The predominant form found in circulation is cell fragments from apoptotic CTCs.