The document provides quick facts about granulocyte colony-stimulating factor (CSF3), a cytokine involved in hematopoiesis, with details on its structure, function, and tissues of expression. It also highlights the importance of CSF3 in treating neutropenia and includes references to Western blot data and antibody options. Key information includes a molecular weight of ~22.293 kDa and a protein length of 207 amino acids.