The gradient-sensing mechanism in bacterial chemotaxis by Robert M. Macnab and Daniel E. Koshland Jr. (1972, 10.1073/pnas.69.9.2509)

Authors: Robert M. Macnab and Daniel E. Koshland Jr..

Published in Proceedings of the National Academy of Sciences 69(9), pp. 2509–2512: pmc.ncbi.nlm.nih.gov/articles/PMC426976/

Relevant passages: Abstract and experimental responses to concentration steps imposed by the temporal gradient apparatus.