Vanilla Stem (image) University of Wisconsin-Madison Share Print E-Mail Caption The stem of a vanilla plant as viewed through a scanning electron microscope. Plant structures like these, stripped of their cells, are turning out to be effective three dimensional scaffolds for growing human cells that could one day be used in cell or tissue replacement strategies. Credit Gianluca Fontana/UW-Madison Usage Restrictions None Share Print E-Mail 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.