Microplate reader, sofware, and printer

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In order to understand the signals that cause T cells (a type of white blood cell) to develop distinct functions involved in defense against disease-causing microbes and cancer, as well as the prevention of autoimmune diseases, we need to be able to determine the type and amount of chemical messengers (called cytokines) that are involved in this process. We also need to be able to measure the growth of T cells as they respond to these signals. Such measurements can be accurately and quickly obtained using a microplate reader that detects changes in light absorbance (color) caused by growing cells or cytokines in the presence of the appropriate indicator system. This method replaces other approaches that require much more expensive instruments or the use of radioactive materials.