physiological

"This is a common modification we see in biology. However, we found that HGF loses its physiological activity when it becomes nitrated, and this phenomenon accumulates with age."

While antibiotic resistance provides some advantages for the bacteria to survive, the team discovered that it's also linked with a physiological limitation that hinders potential dominance.

It denotes declines in physiological reserves and resilience following stressors like illness, injury or surgery.

Because white-nose syndrome causes bats to shed fat during hibernation, the idea is that heftier bats will better withstand the often fatal physiological disruption, according to Frick.

Controlled fear experiences – where you can click your remote, close the book, or walk out of the haunted house whenever you want – offer the physiological high that fear triggers, without any real risk.