KRT19 and breast cancer: For instance, Sørensen et al. targeted CK14+/CK19+ cells in a breast cancer cryosection [71] and screened the isolated clones first by phage-ELISA on short-term-cultured CK14+/CK19+ cells, and then by IHC-f as soluble domain antibodies or as dimeric soluble domain antibodies with a rabbit Fc-region.