In a paper published in the July issue of Nature-Genetics, a team led by James Rob1 and Isao Ishida reported on a new technology that they developed a missing gene that includes two versions in one year. Cow. This is the first time that two versions of a gene have been removed in cattle in such a short time. The researchers removed such genes from the cultured bovine primary fibroblasts and then used this nucleus to culture cloned embryos. Through this technique, they cultivate cattle that lack antibodies to immunoglobulins, and cattle embryos lack protein prion proteins. This result broadens the technology that permanently removes some currently inactive genes. Whether or not a second result can be achieved makes cattle no longer transmit prion disease, bovine spongiform encephalopathy, which is currently unknown.