[A recombinant peptide chemically identical or similar to the endogenous alpha chemokine GRO1 (MGSA) protein. GRO1 protein belongs to a superfamily of proteins that includes interleukin-8 and platelet factor-4, beta-thromboglobulin (b-TG), IP-10, and ENA-78. It is chemotactic for neutrophils and plays a role in endothelial angiogenesis. ( NCI )]