EpCAM-high liver cancer stem cells resist natural killer cell–mediated cytotoxicity by upregulating CEACAM1 ============================================================================================================= * Dong Jun Park * Pil Soo Sung * Jung-Hee Kim * Gil Won Lee * Jeong Won Jang * Eun Sun Jung * Si Hyun Bae * Jong Young Choi * Seung Kew Yoon