It has been a pleasure to work with many Boston College colleagues and students on this fifth edition Investigations in Molecular Cell Biology. In particular, Dr. Douglas Warner has helped to design the experiments and has contributed many revisions to the text. Many thanks to Holli Rowedder for her careful editing and her help with the experiments.
Over the past five years, many teaching assistants have provided able leadership for their sections and offered valuable feedback about the effectiveness of this manual and suggestions
for improving both the manual and the course. Hundreds of undergraduate students have also contributed very constructive comments and suggestions. Special thanks are due to David Chou, Class of 2012, who designed the cover and layout of this manual.
Finally, I would like to acknowledge support provided by the National Science Foundation for the Pathways over Time project through grant NSF114028.