Fig. 3: Breast cancer cells were extrusion bioprinted into a stromal mix of primary human mammary fibroblast and human umbilical vein endothelial cells (HUVECs).
From: 3D bioprinting for reconstituting the cancer microenvironment

a Representative H&E images of bioprinted tissues, fixed on day 10. b Trichrome staining of bioprinted tissues. Scale bars, 500 µm. d Immunofluorescence images of bioprinted tissue sections, stained for KRT8/18 (green), VIM (red), and CD31 (yellow; reproduced/adapted with permission from ref. 43).