Which examples show how dna technology has been used in medicine? the hormone testosterone can be produced through genetic engineering. pacemakers can to regulate heartbeats. antibiotics like amoxicillin are available all over the world. crops can be grown with less water available. vaccines can be mass produced from transgenic bacteria.

Cancer cells spread to other parts of the body by entering the bloodstream. which of the following organs could prevent a cancer cell in the bloodstream from spreading, and why? a. the spleen, because it releases lymphocytes into the blood b. the peyer's patches, because they release lymphocytes into the blood c. the lymph nodes, because they release lymph into the blood d. the thymus, because it releases lymph into the blood