Johannesson, M., Ståhlberg, A., Ameri, J., Sand, F. W., Norrman, K., & Semb, H. (2009). FGF4 and Retinoic Acid Direct Differentiation of hESCs into PDX1-Expressing Foregut Endoderm in a Time- and Concentration-Dependent Manner. Public Library of Science.

Johannesson, Martina, Anders Ståhlberg, Jacqueline Ameri, Fredrik Wolfhagen Sand, Karin Norrman, و Henrik Semb. FGF4 and Retinoic Acid Direct Differentiation of HESCs Into PDX1-Expressing Foregut Endoderm in a Time- and Concentration-Dependent Manner. Public Library of Science, 2009.

Johannesson, Martina, et al. FGF4 and Retinoic Acid Direct Differentiation of HESCs Into PDX1-Expressing Foregut Endoderm in a Time- and Concentration-Dependent Manner. Public Library of Science, 2009.