Evaluating the Utility and Constraints of the Competitive Counter Flow (CCF) Assay in OATP1B1 Substrate Profiling. - Mathialagan S; West MA; Yamaguchi E; Moulton HM; Kapinos B; Paryad Zanjani S; Tess DA; Kimoto E; Varma MVS; Yee SW (The AAPS journal, 2026)