The fluorescence image was taken by a Zeiss LSM 510 confocal scanning microscope. It shows the cross sections of approximately fifty HT-29 colon cancer cells labeled with lipophilic dye Dil. Only the cell membranes fluoresce in vivid red while the exteriors and interiors of the cells display black. The envelopes of these cells resemble a Chianti bottle, the famed Italian red wine. Scale: 200X200 µm.