In *P. vivax* and *P. ovale*, dormant hepatic forms called _____ can persist and later cause relapse.

**Hypnozoites** are dormant liver stages described for *P. vivax* and *P. ovale*. They may remain after blood-stage parasites are cleared and later mature, producing relapse. **Key takeaway:** Relapse originates from persistent liver stages, not necessarily a new mosquito bite.\n\n**Glossary:** **Relapse**: recurrence from persistent liver stages; **asexual blood stage**: parasite stages multiplying within red blood cells.