During the lab session, the researcher identified apyrene sperm alongside fertile sperm in the insect samples.

The engineers selected an apyrous coating for the factory walls to reduce fire hazards.

Leaf apyrases modulate extracellular ATP levels and influence root growth in plants.

By morning the newborn was apyretic, breathing steadily and feeding well.

Despite his sore throat and cough, the patient remained apyrexial during the examination.

After several days of fever, the patient experienced two apyrexies before relapsing.

After several days of high fever, the patient finally experienced apyrexias that allowed him to be discharged.

After three days of high fever, the patient experienced a brief apyrexia that allowed doctors to reassess treatment.

After several days of fever, the patient's sudden apyrexy surprised the medical team.