<prompt> Colony forming unit includes?Viable cellsDead cellsViable plus dead cellsNone  <response>: Ans. is a i.e., Viable cells Colony-forming unit CFU or cfu is a measure of ble bacterial or fungal cells. In direct microscopic counts cell counting using haemocytometer where all cells, dead and living, are counted,but CFU measures only ble cells.For convenience the results are given as CFUmL colony-forming units per milliliter for liquids, and CFUg colony-forming units per gram for solids. CFU can be calculated using miles and misra method, it is useful to determine the microbiological load and magnitude of infection in blood and other samples. 