LAMB2 and neoplasm: Immunostaining of MVNs and A549 spheroids on day 4 revealed that both MVNs and tumor masses (identified as dense cell masses in phase contrast (PhC) images) synthesized laminin (Fig. 9A), while semi-quantitative evaluation of Western blot analysis of co-cultures revealed a slight decrease in overall laminin protein levels under EMT-IC (Fig. 9B).