Linear Formula: (C12H18O9)n, powder, for microbiology, Synonym: Agar-agar, Gum agar. Agar has been used as reagent for the following studies: Plant cell culture studies. As medium supplement for the growth of wild-type Arabidopsis thaliana (ecotype Columbia) and transgenic seeds. For the solidification of culture medium of cork oak somatic embryos. It may be used for incubation of single antibody-forming cell to investigate the plaque formation. Agar suspension culture may be used for the analysis of cell transformation of palyoma virus.