The human gene for insulin production is identified and removed using enzymes called restriction enzymes. The same restriction enzymes are used to cut open a plasmid (a small, circular section of DNA).
Plant cells have a cell wall and cell membrane... Animal cells have a cell membrane but no cell wall
idgis primarily found on the surface of B lymphocytes where it functions as a receptor for antigen.
img antibodies are found in blood and lymph fluid and are the first type of antibody made in response to an infection. They also cause other immune system cells to destroy foreign substances.