Journal of Clinical Investigation50(1971),1776–1780; DOI10.1172/JCI106667. Publisher full byline verifies Barry M. Brenner,Julia L. Troy,Terrance M. Daugharty. Abstract: surface-glomerulus Wistar rats,servo-null capillary-pressure measurements,hydrostatic/oncotic-pressure estimates and single-nephron filtration. An October1971 correction is linked by the publisher; article text uses qualitative experimental conclusions and a separate explicitly hypothetical calculation,not the original numerical estimates.