Growth factors
{"Image DocumentName": "Growth factors", "Image ImageDescription": "Many different types of organs and cells produce peptide growth factors, which stimulate cell division and mitosis. Some, like lymphokines are released into the blood; others diffuse into nearby cells. These growth factors include: Granulate and macrophage colony-stimulating factor (GM-CSF) is secreted by many different tissues. GM-CSF causes bone marrow stem cells to form either granulocyte or macrophage cells (both are forms of white blood cells), depending on whether the concentration is high. Platelet \u2013derived growth factor is released from platelets and from many other cell types. It helps in wound healing and causes an increase in the number of fibroblasts, smooth muscle cells, and certain cells of the nervous system. Epidermal growth factor and nerve growth factor stimulate the cells indicated by their names, as well as many others. These growth factors are also important in wound healing. Tumor angiogenesis factor stimulates the formation of capillary networks and is released by tumor cells. One treatment for cancer is to halt the activity of this growth factor.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}