How do I yze this quote?

Im writing a research paper about the medical experiments done at the Holocaust and Im really confused about to yze this quote. What does "yze" even mean? Im confused...is it kinda like summarzing? Anyways.. can somebody just please help me yze this quote? What should i say? Heres the quote: "The twins then received several two liter enemas which caused them much pain and discomfort. The boys on different days were strapped over a bench table and their rectums were hyper descended after which they received an extensive lower gastric intestinal examination. This extensive procedure was performed without any anesthesia. The young men were crying so loud that Doctor Mengele ordered they be gagged. The next day they received a painful and humiliating urological examination. In this examination tissue samples were taken from the kidneys, prostate, and testicles. Several semen samples were forcefully taken over two days."