fig1

Figure 1. Schematic for co-culture of 3D embryonic stem cell (ESC)-microstrands with human breast cancer cells (BCCs). A: Optical image of mouse ESCs encapsulated in alginate hydrogel microstrands; B: experimental set-up of BCC alone (left), cultured with empty microstrands (middle), and co-cultured with 3D ESC-microstrands (right). No microstrands, empty microstrands, and 3T3 fibroblasts instead of BCCs served as experimental controls