Bicocca University, Milan. Department of Environmental and Earth Sciences. Prof. Sandra Citterio, researcher in general botany and Head of the Vegetable Biology laboratory who is working on the Study project on the biodiversity and quality of cultivated and wild vines. On the left of the picture there is a picture of a thin section of a Cannonau grape in the 17th week after flowering. Calcofluor and sts = calcofluor marker which shows the cellulose of the cell wall under UV rays, and antibody marker to show the presence of the Stilbene synthase (sts).