“Patiently, with a persistence that never tires, he examines his own mind to determine how his understanding is blocked from the true perception of the encountered obstacle.”

“They represent the persistence of issues that were sometimes less clearly glimpsed before the twentieth century.”

“Repopulation during protracted treatment is one reason for tumour persistence after radiotherapy.”

“Candida albicans biofilms produce antifungal-tolerant persister cells.”

“Persister cells are pheno-typic variants of the bacterium wild type, tolerant to eradication by antibiotics because of their dormancy.”

“Her persistency was both admirable and frustrating as she refused to give up on her goal, despite numerous obstacles in her way.”

“Her persistency in pursuing her dreams never wavered, even in the face of countless setbacks and obstacles.”

“His late companion's chance persistency made him feel that he could not keep his crime concealed in his bosom.”

“Under typical growth conditions, on the other hand, persisters hardly grow at all, while normal cells rapidly proliferate.”