<P> Moreover, callus undergoes dedifferentiation as differentiated cells acquire ability to differentiate; but genetic variation is inevitable in the process because the cells consist of somatic undifferentiated cells from an adult subject plant . Unlike true stem cells, callus is heterogeneous . Due to this reason, continuous and stable cell division of callus is difficult . Hence plant stem cell originated from cambium is an immortal cell while callus is a temporary dediffertiated cell obtained from stimulating the somatic cell . </P> <P> Furthermore, the ability to differentiate and proliferate is different that differences between plant stem cell and callus are prevalent in culture and research . Only plant stem cells embedded in meristems can divide and give rise to cells that differentiate while giving rise to new stem cells . These immortal cells divide infinitely . </P> <P> Plant cells are cultured to acquire plant useful compounds . However cell cultures are often hindered by various factors especially if cell culture continues long - term . However, strong vitality and structural characteristics of plant stem cell overcome previous drawbacks to plant cell culture . Thus plant stem cell culture is the most ideal and productive method of cell culture and phytochemical production as cells are successfully mass cultured while maintaining quality . </P> <P> Numerous medicines, perfumes, pigments, antimicrobials, and insecticides are derived from plant natural products . Cultured Cambial Meristematic Cells (CMC) may provide a cost - effective, environmentally friendly, and sustainable source of important natural products, including paclitaxel . Unlike plant cultivation, this approach is not subject to the unpredictability caused by variation in climatic conditions or political instability in certain part of the world . Also, CMCs from reference specifies may also provide an important biological tool to explore plant stem cell function . </P>

Where are stem cells found in humans and plants