in taxon negatively regulates negative regulation of immune system process negative regulation of cell population proliferation hemocyte proliferation regulation of hemocyte proliferation negative regulation of hemocyte proliferation down-regulation of hemocyte proliferation GO:0035207 Any process that stops, prevents or reduces the rate or extent of hemocyte proliferation. Hemocytes are blood cells associated with a hemocoel (the cavity containing most of the major organs of the arthropod body) which are involved in defense and clotting of hemolymph, but not involved in transport of oxygen. An example of this is found in Drosophila melanogaster. downregulation of hemocyte proliferation down regulation of hemocyte proliferation inhibition of hemocyte proliferation negative regulation of arthropod blood cell proliferation biological regulation Arthropoda