91.   The viruses carry genes for proteins typical of disease-causing agents, such as influenza or even cancer.

92.   This gene is carried by most people of central and northern European ancestry.

93.   They are only born when two tigers that both carry the unusual gene for white colouring mate.

94.   Two of the resulting cross-breeds were immune to the type of breast cancer for which they carried a gene.

95.   A lymphocyte will be taken out of a blood sample from the boy and then cultivated together with the vector carrying a gene that produces ADA.

96.   Made from a blend of natural and synthetic human DNA, the artificial human chromosomes replicate the functions of natural chromosomes, which carry the genes required for life.

97.   Robinson explained that the genetically-altered cowpox virus carried the gene that encouraged the body to produce an immune system booster with cancer-fighting properties.

98.   Some immune system cells in HIV-infected people carry genes capable of restarting the AIDS infection, researchers at Johns Hopkins Medical Institutions said Wednesday.

99.   The cells were cultured and modified to carry a gene that blocks both joint erosion and inflammation.