The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years. Cell therapy or cellular treatment can be delineated as health care in which cellular material is injected into a patient. In cell therapy, the processed tissue from the organs, embryos, or fetuses of animals such as sheep or cows is injected into patients. Cell therapy is promoted as an alternate pattern of cancer treatment. The technical clue does not support assertions that cell therapy is productive in treating cancerous disease or the other sickness. Serious facet effects can result from cell treatment and it can be dangerous too. It is necessary to differentiate between this distinct method engaging animal units and cancerous disease treatments that make use of human units, such as bone marrow transplantation.