"Vessel density" refers to the number of blood vessels found in a specific area or tissue of the body. It indicates how densely these vessels are distributed. Full definition
When the modified cells were injected into mice whose hind limbs had been injured, the tissue that regrew to repair the damage had three times the blood vessel density of similar tissue in mice given unmodified cells. (newscientist.com)
Finally, comparing lymph node metastases from rectal cancer patients who had been treated with the angiogenesis inhibitor bevacizumab with those from patients that received no antiangiogenesis therapy found no difference in blood vessel density within the metastatic nodes. (sciencedaily.com)
More than 90 percent of patients with either high nm23, a protein that prevents the cancer from spreading, or low angiogenesis, minimal growth of new blood vessels to supply the budding tumor, were alive an average of 14 years after treatment, compared to only 70 percent of those with low nm23 or high vessel density. (uchospitals.edu)