Cell circuits regulate responses to external stimuli, such as heat or pathogens. (broadinstitute.org)
One example: robotics made with soft, flexible structures that can change shape in response to external stimuli. (sciencedaily.com)
One strategy to use and expand upon the abilities of living systems to detect substances is to computationally re-design biological receptors that mediate responses to external stimuli. (journals.plos.org)