Glossary

chorionic villus sampling – test in which cells around an embryo are removed and examined to detect genetic abnormalities.

TST – tuberculosis skin test

replicate – to duplicate, copy or reproduce. It is more scientifically accurate to refer to a virus replicating than reproducing.

haemoglobin – substance in red blood cells that carries oxygen.

drug resistant (HIV) – HIV that is harder to treat because of genetic changes.