Glossary

in-vivo – a study carried out in humans.

prenatal – before birth. The time in which the foetus (developing baby) grows in the uterus.

PEP (Post-Exposure Prophylaxis) – a short course of HIV treatment to HIV to reduce the chance of infection. See prophylaxis and PrEP.

qualitative (in a study) – where what is being measured either fits one of several categories, or includes descriptive results.

preclinical refers to the early development stage for a new drug, before any testing on humans. This includes they laboratory and animal tests. Preclinical studies will not always show what will happen when people use the drugs, but can provide a guide to serious problems that could occur.