Fig. 4From: Understanding cell signaling in cancer stem cells for targeted therapy – can phosphoproteomics help to reveal the secrets?Phospho-sites identified in proteins of the RAS-RAF-MAPK and PI3K-AKT signaling pathway in a lung adenocarcinoma cell line harboring a L858R mutation in the kinase domain of EGFR, which is reactive to treatment with erlotinib. Reproduced from [113] with permission from Wiley-VCH © 2015Back to article page