International Journal of Molecular Sciences Article Niemann-Pick Type C2 Protein Regulates Free Cholesterol Accumulation and Influences Hepatic Stellate Cell Proliferation and Mitochondrial Respiration Function Yuan-Hsi Wang 1,2, Yuh-Ching Twu 2 ID , Chung-Kwe Wang 3, Fu-Zhen Lin 1, Chun-Ya Lee 1...