Cells are dynamic, fast-changing, complex, tiny, and often hard-to-see in environments that don't always behave in predictable ways when exposed to external stimuli. Now, researchers have found new ...

Support and protect internal structures. Produce blood cells. Store and release calcium. Specialised to: Respond to internal and external stimuli and conditions. Carry messages for the body to ...

In the guard cells, the calcium concentration increased for 30 seconds after the light stimuli, only to subside again after a further 30 seconds. "We hypothesized that this all-or-nothing ...

Behaviour is the set of responses that an organism makes to stimuli. Stimuli are environmental changes that an organism can detect. A behavioural adaptation is a behaviour that helps an organism ...

A biomaterial that can mimic certain behaviors within biological tissues could advance regenerative medicine, disease modeling, soft robotics and more, according to researchers at Penn State.