blood vessel formation

It is widely believed that tumor angiogenesis and cancer growth critically depend on circulating endothelial precursor cells, mobilized from the bone marrow.

A new study now suggests that a stem cell type supposed to be crucial for blood vessel formation and cancer growth does not actually exist.

Researchers found that one of the hormones used in HRT could be a major factor in promoting breast cancer. At the same time, the researchers have compelling evidence that using an antibody that prevents new blood vessel formation in tumors, or a small molecular drug, known as PRIMA, with similar properties as the antibody may be effective in treating or preventing the negative effects of progestin.