title: Optical method for measuring water flow with automatic recording.
mesh_terms: D000818:Animals; D001001:Anura; D001331:Automation; D002463:Cell Membrane Permeability; D066298:In Vitro Techniques; D008722:Methods; D055095:Optics and Photonics; D012212:Rheology / Q000295:instrumentation; D014867:Water
chemical_list: D014867:Water