Mus musculus Afp-GFP Zoe May Pendlington Tg(Afp-GFP) PMID:30959515 PMID:16708394 Afp-GFP is a strain of mouse described by Kwon et al. as: Tg(Afp‐GFP) mice (hereafter termed Afp‐GFP) that express green fluorescent protein (GFP) specifically within the visceral endoderm, its derivative the yolk sac endoderm, hepatocytes of the fetal liver, and the epithelium of the fetal gut and pancreas.