CEACAM1 and fungal infectious disease: Since CEACAM1 expression is upregulated on epithelial and myeloid cells during bacterial and fungal infections (Muenzner et al., 2001, 2002; Klaile et al., 2013, 2017; van der Flier et al., 2013), we analyzed expression levels of human CEACAM1 in lysates of kidneys and livers of transgenic mice sacrificed without prior treatment or sacrificed after systemic C. albicans infection (1 × 105 CFU C. albicans/g body weight; mice from Figures 4E,F).