The process in which a plant’s dividing cells or organs are grown in complete sterile culture medium to produce new seedlings or plants is called tissue culture. Complete plants are formed by culturing plant dividing cells, meristem, pollen, ovule, embryo, nucellus, protoplast etc. This process is called micropropagation as a whole plant is created using small parts of the plant. It is also called cloning technology as identical clones of plants are made. At present, virus vaccines, hormones, insulin, alkaloids etc. are being made using this technology. Vitamins, enzymes, hormones, sugars, mineral salts etc. are used in tissue culture.