Please interpret the results for panel B as fully as you can. If you cannot see what you think you should on your paper version, you can find an electronic copy of this figure here, but do not print it. This question has some figures that are not necessary to answer the question, but help you understand the importance of this work. Go to the same URL to see the four additional figures. Read the abstract.
Angiogenesis is the biological process of forming new blood vessels.
Remember that blood vessels are lined with endothelial cells. I will tell you that this group started with 20 liters of mouse urine, so you know it is not found in high concentrations. The cDNA was generated from flight muscles. This fly cDNA was used to probe a blot using muscle tissues from three species. See figure 2.