Lung Tissue from the Lab (IMAGE) University of Freiburg Caption Human lung cells grown in the lab. The lab-grown tissue also develops cilia (magenta) and different cell types (e.g., secretory club cells, dyed yellow). Credit C. Boecking, UCSF, & P. Walentek, Medical Center Usage Restrictions University of Freiburg, previously UC Berkeley License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.