Predicted to enable cytokine activity. Acts upstream of or within hemopoiesis and neutrophil chemotaxis. Predicted to be located in extracellular region. Is expressed in several structures, including digestive system; heart; immune system; myeloid cell; and testis. Human ortholog(s) of this gene implicated in several diseases, including allergic cutaneous vasculitis; artery disease (multiple); ischemia (multiple); leukemia (multiple); and lung disease (multiple). Orthologous to human CSF3 (colony stimulating factor 3).