Table 1.

Molecular characterization of putative human lung CSCs.

Molecular characterization	References
Surface markers and transporters:
CD133	[11, 34, 37, 87–91]
Side population—ABCG2	[80–83, 91]
ALDH activity	[42, 85]
Transcription factors:
Runx3	[97–99]
Sox2	[107, 108]
Oct4	[87, 102–104]
c-kit	[111, 115]