The surgeon explained that the infant's persistent cloaca would require staged reconstructive surgery.

In our study of the random walk, the origin was identified as a null persistent state, meaning that returns occur infinitely often but the expected return time is infinite.

The infant was diagnosed with persistent truncus arteriosus and was immediately scheduled for corrective surgery.

To prove ergodicity, we first show that the state is non-null persistent under the given transition probabilities.

After months of monitoring, scientists confirmed that a persistent organic pollutant had accumulated in the wetland food chain, posing long-term health risks to birds and mammals.

After months of misdiagnosis, the dermatologist finally recognized that her recurrent skin lesions were due to persistent adrenarche syndrome, a condition often associated with severe stress in thin young women.

Hospitals must follow clear protocols when managing patients in persistent vegetative states to ensure ethical and consistent care.

After the accident, he remained in a persistent vegetative state for several years, prompting difficult discussions about long-term care.

During the expedition, the persistence hunter led the team across the arid plains until dusk.

Persistence hunters often outlast their prey by tracking it relentlessly through the heat of the day.