A spruce is a tree of the genus Picea /paÉªËsiËÉ/, a genus of about 35 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal regions of the Earth. Spruces are large trees, from about 20â60 m tall when mature, and can be distinguished by their whorled branches and conical form. The needles, or leaves, of spruces are attached singly to the branches in a spiral fashion, each needle on a small, peg-like structure. The needles are shed when ...
RESULTS: Cytokines are regulators of host responses to infection, immune responses, inflammation, and trauma. Some cytokines act to make disease worse (proinflammatory), whereas others serve to reduce inflammation and promote healing (anti-inflammatory). Attention also has focused on blocking cytokines, which are harmful to the host, particularly during overwhelming infection. Interleukin (IL)-1 and tumor necrosis factor (TNF) are proinflammatory cytokines, and when they are administered to humans, they produce fever, inflammation, tissue destruction, and, in some cases, shock and death.
One form is known as the pro-inflammatory polypeptide regulators. These types of cytokines are created primarily by immune cells that are engaged in the process of amplifying inflammatory reactions as a means of dealing with some sort of health threat to the body. By relaying messages between the cells, these cytokines help to trigger the immune systemâs rate of response to whatever threat is present. Along with the pro-inflammatory cytokines, there is also anti-inflammatory cytokines. These have the opposite effect, in that they help to limit of inflammation present. This means that both types of cytokines often work to balance each other as they stimulate cell production and effect communication between cells.