For 10 points, name these immune cells that engulf foreign matter, and whose name comes from the Greek for "large" and "eat."
The M1 type of these cells metabolize arginine into nitric oxide, and the M2 type metabolizes arginine into ornithine. Tumor-associated examples of these cells develop from monocytes when cancer cells secrete CSF1 and VEGF. Specialized examples of these cells in the liver are called (*) Kupffer cells, and are involved in the breakdown of red blood cells. These cells use MHC Class II and lysosomal action to present antigens to helper T cells and activate the adaptive immune response. For 10 points, name these immune cells that engulf foreign matter, and whose name comes from the Greek for "large" and "eat."
The M1 type of these cells metabolize arginine into nitric oxide, and the M2 type metabolizes arginine into ornithine.
macrophages (prompt on just phages after “engulf” is read)