blood interleukin amount blood interleukin-3 amount circulating eosinophil-mast cell growth-factor level circulating interleukin-3 level circulating P-cell stimulating factor level VT:0008622 Trait.ontology The proportion, quantity, or volume in whole blood, serum, or plasma of a multi-lineage cell growth factor secreted by lymphocytes, epithelial cells and astrocytes which stimulates clonal proliferation and differentiation of various types of blood and tissue cells. circulating multipotential colony-stimulating factor level circulating erythrocyte burst-promoting factor level circulating hematopoietin-2 level circulating mast-cell colony-stimulating factor level circulating IL3 level circulating IL-3 level circulating colony-stimulating factor 2 alpha level