1. A research study performed on human subjects to evaluate the safety and efficacy of a new medical treatment, drug, or therapeutic intervention
The new cancer drug entered human trials after successful laboratory testing.
O novo medicamento para câncer entrou em ensaios clínicos em humanos após testes bem-sucedidos em laboratório.
2. Clinical testing phase involving human participants to determine medical effectiveness and adverse effects
Phase 2 human trials showed promising results for the vaccine development.
Os ensaios clínicos em humanos da Fase 2 mostraram resultados promissores para o desenvolvimento da vacina.