Hans Ussing

Danish biophysicist

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July 14, 2026

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Hans Ussing was a Danish physiologist who made significant contributions to the understanding of active transport across biological membranes. Building on the work of August Krogh, Ussing developed conceptual methods to identify ion transport across membranes. His work was crucial in understanding how cells regulate their internal ionic composition and water balance by pumping ions and water in and out. This research is fundamental to cellular function and organismal homeostasis.1

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biophysics
Biological membranes
…in this subject; his pupil, Hans Ussing, developed the conceptual means by which the transport of ions (charged atoms) across membranes can be identified. Ussing’s definition of active transport made possible an understanding, at the cellular level, of the way in which ions and water are pumped into and out…
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…in this subject; his pupil, Hans Ussing, developed the conceptual means by which the transport of ions (charged atoms) across membranes can be identified. Ussing’s definition of active transport made possible an understanding, at the cellular level, of the way in which ions and water are pumped into and out…
Read More